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Genuine Yamaha OEM Cylinder Head Gasket
Yamaha F75-F115 & Mercury 75-115HP Cylinder Head Gasket - 67111-1
The Yamaha OEM 67111-1 Cylinder Head Gasket is a genuine Yamaha replacement head gasket used across a broad range of Yamaha four-stroke outboards including select F75, F80, F90, F100, F115 and LF115 engines.
This gasket family also appears in Mercury applications including select 75HP and 90HP carbureted engines and 75HP, 80HP, 90HP, 100HP and 115HP EFI four-stroke outboards.
It cross references Yamaha 67F-11181-00-00, 67F-11181-01-00, 67F-11181-02-00 and 67F-11181-03-00, Sierra 18-99094, and Mercury 804115 / 8041151.
OEM & Cross Reference Numbers
| Brand / Type | Part Number |
|---|---|
| Pro Marine Item | 67111-1 |
| Yamaha OEM | 67F-11181-00-00 |
| Yamaha OEM | 67F-11181-01-00 |
| Yamaha OEM | 67F-11181-02-00 |
| Yamaha OEM | 67F-11181-03-00 |
| Sierra | 18-99094 |
| Mercury OEM | 804115 |
| Mercury OEM | 8041151 |
Yamaha Outboard Fitment
Verified Yamaha applications span multiple generations of 75HP through 115HP four-stroke outboards, including early F80/F100 engines, later F75/F90 applications and extensive F115 / LF115 coverage.
| Engine Family | Verified Applications |
|---|---|
| Yamaha F75 | F75TLRB, F75TLRC, F75TLRD, F75TLR, F75TLR_041, F75LA and F75LA_0112. |
| Yamaha F80 | F80TLRX, F80TLRY, F80TLRZ, F80TXRX, F80TXRY, F80TJRA, F80TJRB, F80TLRA and F80TLRB. |
| Yamaha F90 | F90TJRB, F90TJRC, F90TJRD, F90TJR, F90TLRB, F90TLRC, F90TLRD, F90TLR, F90TXRD, F90TXR, F90JA, F90LA and F90XA, including related later suffix configurations. |
| Yamaha F100 | F100TLRX, F100TLRY, F100TLRZ, F100TXRX, F100TXRY, F100TXRZ, F100TLRA, F100TLRB, F100TXRA and F100TXRB. |
| Yamaha F115 | F115TLRY, F115TLRZ, F115TLRA/B/C/D, F115TXRY, F115TXRZ, F115TXRA/B/C/D, F115TJRA/B/C/D and later F115TJR, F115TLR, F115TXR, F115JA, F115LA and F115XA applications. |
| Yamaha LF115 | LF115TXRY, LF115TXRZ, LF115TXRA/B/C/D, later LF115TXR and LF115XA counter-rotation applications. |
Representative Yamaha Model-Year Coverage
| Model Years | Examples |
|---|---|
| 1999-2001 | Select F80, F100, F115 and LF115 four-stroke applications. |
| 2002-2003 | Extensive F80, F90, F100, F115 and LF115 applications. |
| 2004 | F75TLRC, F90TJRC, F90TLRC, F115TJRC, F115TLRC, F115TXRC and LF115TXRC. |
| 2005 | F75TLRD, F90TJRD, F90TLRD, F90TXRD, F115TJRD, F115TLRD, F115TXRD and LF115TXRD. |
| Later Applications | Select F75, F90, F115 and LF115 applications listed in the supplied fitment as 2006 and later. |
Mercury Outboard Fitment
Mercury catalog information supplied for this gasket confirms both carbureted and EFI four-stroke applications.
| Mercury Engine | Serial Range |
|---|---|
| 75HP Carb | 0G960500 thru 0T800999 |
| 75HP Carb Bodensee | 0G960500 thru 0T800999 |
| 90HP Carb | 0G960500 thru 0T800999 |
| 75HP Carb | 0T801000 thru 1B226999 |
| 75HP Carb Bodensee | 0T801000 thru 1B226999 |
| 90HP Carb | 0T801000 thru 1B226999 |
| 75HP EFI | 1B172291 thru 1B366822 |
| 80HP EFI | 1B227000 thru 1B366822 |
| 90HP EFI | 1B172291 thru 1B366822 |
| 100HP EFI | 1B227000 thru 1B366822 |
| 115HP EFI | 0T178500 thru 0T800999 |
| 115HP EFI | 0T801000 thru 1B226999 |
| 115HP EFI | 1B172291 thru 1B366822 |
| 115HP EFI | 1B227000 thru 1B366822 |
Cylinder head gasket fitment can vary within the same horsepower family. Do not order by horsepower alone.
For Yamaha applications, verify the complete engine model and confirm that the original head gasket cross references one of the 67F-11181 numbers listed above.
For Mercury applications, verify the engine serial number and confirm that the head gasket cross references 804115 or 8041151.
Head Gasket & Powerhead Rebuild Options
Pro Marine stocks both an aftermarket version of this individual cylinder head gasket and a complete powerhead gasket kit for compatible engines.
Pro Marine Cylinder Head Gasket - 67111
Pro Marine aftermarket replacement for compatible Yamaha and Mercury applications using the 67F-11181 / 804115 gasket family.
A cost-effective alternative when an OEM Yamaha gasket is not required.
Pro Marine Powerhead Gasket Kit - 6803
Rebuilding the complete engine? The 6803 powerhead gasket kit contains the major gaskets and sealing components used during compatible powerhead disassembly and reassembly.
This is usually the better choice for a complete rebuild rather than purchasing only the individual cylinder head gasket.
What the Cylinder Head Gasket Does
The cylinder head gasket seals the mating surface between the cylinder head and engine block. It must maintain a seal around the combustion chambers while also separating oil and cooling passages where applicable.
A properly sealing head gasket is critical for maintaining cylinder compression and preventing combustion pressure, cooling water or engine oil from leaking between passages.
Common Signs of a Failed Head Gasket
- Low compression in one or more cylinders
- Overheating
- Cooling-water intrusion into the cylinder
- Combustion gases entering the cooling system
- Visible gasket failure after cylinder-head removal
- Corrosion or erosion around the combustion sealing surface
- Uneven or damaged cylinder-head sealing surface
During Cylinder Head Service
When a cylinder head is removed, inspect both the cylinder head and block sealing surfaces before installing the new gasket. Check for corrosion, erosion, warpage and other damage that could prevent the new gasket from sealing correctly.
Follow the applicable Yamaha or Mercury service manual for bolt tightening sequence, torque specifications and any required inspection or machining procedures.
Individual Head Gasket or Complete Gasket Kit?
| Repair | Recommended Option |
|---|---|
| Cylinder head is being removed only | Individual OEM Yamaha 67111-1 head gasket may be appropriate. |
| Need a lower-cost individual replacement | Consider the Pro Marine 67111 cylinder head gasket linked above. |
| Complete powerhead rebuild | Consider the Pro Marine 6803 powerhead gasket kit so the other disturbed engine gaskets are available during assembly. |
Key Features and Benefits
- Genuine Yamaha OEM cylinder head gasket
- Fits select Yamaha F75 four-stroke engines
- Fits select Yamaha F80 four-stroke engines
- Fits select Yamaha F90 four-stroke engines
- Fits select Yamaha F100 four-stroke engines
- Fits extensive Yamaha F115 and LF115 applications
- Fits select Mercury 75HP carbureted engines
- Fits select Mercury 90HP carbureted engines
- Fits select Mercury 75HP, 80HP, 90HP and 100HP EFI engines
- Fits select Mercury 115HP EFI applications
- Replaces Yamaha 67F-11181-00-00 through 67F-11181-03-00
- Cross references Sierra 18-99094
- Cross references Mercury 804115 / 8041151
- Pro Marine aftermarket gasket linked above
- Complete Pro Marine powerhead gasket kit linked above
FAQ
Is 67111-1 a genuine Yamaha head gasket?
Yes. This listing is for the genuine Yamaha OEM version.
The Pro Marine aftermarket 67111 gasket is linked above.
What Yamaha OEM numbers does this gasket replace?
It cross references 67F-11181-00-00, 67F-11181-01-00,
67F-11181-02-00 and 67F-11181-03-00.
Does this fit Yamaha F75?
Yes. Verified applications include select F75TLR and F75LA models.
Does this fit Yamaha F90?
Yes. The supplied fitment includes numerous F90 TJR, TLR, TXR,
JA, LA and XA applications.
Does this fit Yamaha F100?
Yes. Verified applications include several F100TLR and F100TXR
engines from 1999 through 2003.
Does this fit Yamaha F115?
Yes. The fitment includes extensive F115 TJR, TLR, TXR, JA, LA and XA
applications, plus LF115 counter-rotation engines.
Does this fit Mercury 75HP and 90HP carbureted engines?
Yes. Verified Mercury fitment includes both 75HP and 90HP carbureted
applications from 0G960500 thru 1B226999.
Does this fit Mercury EFI engines?
Yes. The supplied Mercury data includes select
75HP, 80HP, 90HP, 100HP and 115HP EFI applications.
Does it fit Mercury 115HP EFI?
Yes. Mercury catalog fitment includes 115HP EFI applications in
0T178500 thru 0T800999,
0T801000 thru 1B226999, and later
1B-series applications through 1B366822.
Is there an aftermarket version available?
Yes. The Pro Marine 67111 cylinder head gasket is
linked above.
Do you sell a complete gasket kit?
Yes. The Pro Marine 6803 Powerhead Gasket Kit is linked
above for compatible applications where a complete engine rebuild or
major powerhead repair is being performed.
Should I reuse the old cylinder head gasket?
A cylinder head gasket should be replaced when the cylinder head has been
removed. Follow the applicable Yamaha or Mercury service procedure during
reassembly.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
67111-1, Yamaha 67111-1, 67F-11181-00-00, 67F-11181-01-00, 67F-11181-02-00, 67F-11181-03-00, Yamaha 67F-11181, 18-99094, Sierra 18-99094, 804115, 8041151, Yamaha cylinder head gasket, Yamaha F75 head gasket, Yamaha F80 head gasket, Yamaha F90 head gasket, Yamaha F100 head gasket, Yamaha F115 head gasket, Yamaha LF115 head gasket, Mercury 75 carb head gasket, Mercury 90 carb head gasket, Mercury 75 EFI head gasket, Mercury 80 EFI head gasket, Mercury 90 EFI head gasket, Mercury 100 EFI head gasket, Mercury 115 EFI head gasket, Mercury 804115 head gasket, F115TLR head gasket, F115TXR head gasket, F115TJR head gasket, F115JA head gasket, F115LA head gasket, F115XA head gasket, LF115TXR head gasket, 67111, Pro Marine 67111, 6803, Yamaha powerhead gasket kit
67F-11181-00-00
67F-11181-01-00
67F-11181-02-00
67F-11181-03-00
804115
8041151
Pro Marine Yamaha / Mercury Cylinder Head Gasket
Yamaha F75-F115 & Mercury 75-115HP Cylinder Head Gasket - Pro Marine 67111
The Pro Marine 67111 Cylinder Head Gasket is an aftermarket replacement head gasket for select Yamaha four-stroke and Mercury outboard applications.
Verified Yamaha fitment includes select F75, F80, F90, F100, F115 and LF115 engines. Mercury applications include select 75HP and 90HP carbureted engines and 75HP, 80HP, 90HP, 100HP and 115HP EFI outboards.
This gasket replaces Yamaha 67F-11181-00-00, 67F-11181-01-00, 67F-11181-02-00 and 67F-11181-03-00, Sierra 18-99094, and Mercury 804115 / 8041151.
OEM & Cross Reference Numbers
| Brand / Type | Part Number |
|---|---|
| Pro Marine | 67111 |
| Yamaha OEM | 67F-11181-00-00 |
| Yamaha OEM | 67F-11181-01-00 |
| Yamaha OEM | 67F-11181-02-00 |
| Yamaha OEM | 67F-11181-03-00 |
| Sierra | 18-99094 |
| Mercury OEM | 804115 |
| Mercury OEM | 8041151 |
Yamaha Outboard Fitment
| Engine Family | Verified Applications |
|---|---|
| Yamaha F75 | F75TLRB, F75TLRC, F75TLRD, F75TLR, F75TLR_041, F75LA and F75LA_0112. |
| Yamaha F80 | F80TLRX, F80TLRY, F80TLRZ, F80TXRX, F80TXRY, F80TJRA, F80TJRB, F80TLRA and F80TLRB. |
| Yamaha F90 | F90TJRB, F90TJRC, F90TJRD, F90TJR, F90TLRB, F90TLRC, F90TLRD, F90TLR, F90TXRD, F90TXR, F90JA, F90LA and F90XA, including related suffix configurations. |
| Yamaha F100 | F100TLRX, F100TLRY, F100TLRZ, F100TXRX, F100TXRY, F100TXRZ, F100TLRA, F100TLRB, F100TXRA and F100TXRB. |
| Yamaha F115 | F115TLRY, F115TLRZ, F115TLRA/B/C/D, F115TXRY, F115TXRZ, F115TXRA/B/C/D, F115TJRA/B/C/D and later F115TJR, F115TLR, F115TXR, F115JA, F115LA and F115XA applications. |
| Yamaha LF115 | LF115TXRY, LF115TXRZ, LF115TXRA/B/C/D, later LF115TXR and LF115XA counter-rotation applications. |
Mercury Outboard Fitment
| Mercury Engine | Serial Range |
|---|---|
| 75HP Carb | 0G960500 thru 0T800999 |
| 75HP Carb Bodensee | 0G960500 thru 0T800999 |
| 90HP Carb | 0G960500 thru 0T800999 |
| 75HP Carb | 0T801000 thru 1B226999 |
| 75HP Carb Bodensee | 0T801000 thru 1B226999 |
| 90HP Carb | 0T801000 thru 1B226999 |
| 75HP EFI | 1B172291 thru 1B366822 |
| 80HP EFI | 1B227000 thru 1B366822 |
| 90HP EFI | 1B172291 thru 1B366822 |
| 100HP EFI | 1B227000 thru 1B366822 |
| 115HP EFI | 0T178500 thru 0T800999 |
| 115HP EFI | 0T801000 thru 1B226999 |
| 115HP EFI | 1B172291 thru 1B366822 |
| 115HP EFI | 1B227000 thru 1B366822 |
Do not order a cylinder head gasket by horsepower alone.
For Yamaha applications, verify the complete model and confirm the engine calls for one of the 67F-11181 gasket numbers listed above.
For Mercury applications, verify the complete engine serial number and confirm the gasket cross references 804115 or 8041151.
OEM & Complete Gasket Kit Options
Pro Marine also stocks the genuine Yamaha OEM version of this head gasket, as well as a complete powerhead gasket kit for compatible engines.
Genuine Yamaha OEM Cylinder Head Gasket - 67111-1
Genuine Yamaha factory version for compatible applications using the 67F-11181 cylinder head gasket family.
Choose this option when an OEM Yamaha gasket is preferred for the repair.
Pro Marine Powerhead Gasket Kit - 6803
Performing a complete powerhead rebuild? The 6803 gasket kit is the better starting point when multiple engine gaskets and sealing components will be disturbed.
What This Cylinder Head Gasket Does
The cylinder head gasket seals the joint between the cylinder head and engine block. It helps contain combustion pressure while sealing the cooling and lubrication passages that pass between the two components.
Proper sealing is critical for maintaining compression and preventing cooling water, combustion gases or engine oil from moving between passages where they do not belong.
Common Signs of Head Gasket Failure
- Low or uneven cylinder compression
- Cooling-water intrusion into one or more cylinders
- Overheating
- Combustion pressure entering the cooling system
- Visible erosion or failure of the old gasket
- Corrosion around the combustion sealing area
- Evidence of leakage between adjacent passages
What to Inspect During Cylinder Head Service
Whenever the cylinder head is removed, inspect the head and block sealing surfaces for corrosion, erosion, pitting, distortion and other damage that could prevent the replacement gasket from sealing correctly.
The applicable Yamaha or Mercury service manual should be followed for surface inspection, tightening sequence, fastener requirements and torque specifications.
Individual Head Gasket vs. Complete Powerhead Gasket Kit
| Type of Repair | Recommended Option |
|---|---|
| Replacing only the cylinder head gasket | Pro Marine 67111 is a cost-effective individual replacement. |
| OEM gasket preferred | Choose the genuine Yamaha OEM 67111-1 gasket linked above. |
| Complete engine / powerhead rebuild | Consider the Pro Marine 6803 complete powerhead gasket kit. |
Why Choose the Pro Marine 67111?
- Pro Marine aftermarket cylinder head gasket
- Cost-effective alternative to the Yamaha OEM gasket
- Replaces Yamaha 67F-11181-00-00
- Replaces Yamaha 67F-11181-01-00
- Replaces Yamaha 67F-11181-02-00
- Replaces Yamaha 67F-11181-03-00
- Cross references Sierra 18-99094
- Cross references Mercury 804115 / 8041151
- Fits select Yamaha F75 engines
- Fits select Yamaha F80 engines
- Fits select Yamaha F90 engines
- Fits select Yamaha F100 engines
- Fits extensive Yamaha F115 and LF115 applications
- Fits select Mercury 75HP and 90HP carbureted engines
- Fits select Mercury 75-115HP EFI engines
- Yamaha OEM gasket option linked above
- Complete powerhead gasket kit linked above
FAQ
Is 67111 an OEM Yamaha gasket?
No. This listing is for the Pro Marine aftermarket version.
The genuine Yamaha OEM 67111-1 head gasket is linked above.
What Yamaha numbers does Pro Marine 67111 replace?
It cross references 67F-11181-00-00, 67F-11181-01-00,
67F-11181-02-00 and 67F-11181-03-00.
Does 67111 fit Yamaha F75?
Yes. Verified applications include select F75TLR and F75LA models.
Does it fit Yamaha F90?
Yes. The supplied fitment includes numerous F90 TJR, TLR, TXR,
JA, LA and XA applications.
Does it fit Yamaha F100?
Yes. Verified applications include several F100TLR and F100TXR models.
Does this gasket fit Yamaha F115?
Yes. Extensive F115 TJR, TLR, TXR, JA, LA and XA applications are
included, along with LF115 counter-rotation models.
Does this fit Mercury 75HP and 90HP carbureted engines?
Yes. Verified Mercury applications include 75HP and 90HP carb engines
across serial ranges from 0G960500 thru 1B226999.
Does it fit Mercury EFI outboards?
Yes. The supplied fitment includes select
75HP, 80HP, 90HP, 100HP and 115HP EFI engines.
Does it fit Mercury 115 EFI?
Yes. The supplied Mercury catalog information includes several
115HP EFI serial ranges through 1B366822.
Is the OEM Yamaha version available?
Yes. The genuine Yamaha 67111-1 cylinder head gasket is
linked above.
Do you sell a complete powerhead gasket kit?
Yes. The Pro Marine 6803 powerhead gasket kit is linked
above for compatible applications.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Parts must be new, unused, and in original packaging.
- Installed parts are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
67111, Pro Marine 67111, 67F-11181-00-00, 67F-11181-01-00, 67F-11181-02-00, 67F-11181-03-00, Yamaha 67F-11181, 18-99094, Sierra 18-99094, 804115, 8041151, Yamaha cylinder head gasket, Yamaha F75 head gasket, Yamaha F80 head gasket, Yamaha F90 head gasket, Yamaha F100 head gasket, Yamaha F115 head gasket, Yamaha LF115 head gasket, Mercury 75 carb head gasket, Mercury 90 carb head gasket, Mercury 75 EFI head gasket, Mercury 80 EFI head gasket, Mercury 90 EFI head gasket, Mercury 100 EFI head gasket, Mercury 115 EFI head gasket, F115TLR head gasket, F115TXR head gasket, F115TJR head gasket, F115JA head gasket, F115LA head gasket, F115XA head gasket, LF115TXR head gasket, 67111-1, Yamaha OEM head gasket, 6803, Yamaha powerhead gasket kit, Mercury powerhead gasket kit
67F-11181-00-00
67F-11181-01-00
67F-11181-02-00
67F-11181-03-00
804115
8041151
18-2914
30603
31010
32433
508836
8M0090319
85608
856081
9-60034
31050
42631
426311
447-320
508835
8M0204678
9-60031
30604
31020
32434
508837
85609
85609B1
856091
858524
9-60035
32960
509261
8M0204705
9-60054
98769
987691
OEM Mercury & Tohatsu Thermostat Gasket
Mercury & Tohatsu 4HP-30HP FourStroke Thermostat Cover Gasket
Genuine OEM thermostat cover gasket used on many Mercury and Tohatsu 4-stroke outboards ranging from 4HP through 30HP. This gasket helps create a proper seal between the thermostat housing and engine components during cooling system service.
Commonly replaced during thermostat maintenance, cooling system repairs, or preventative service on compatible Mercury, Mariner, Nissan, and Tohatsu outboards.
Compatible Mercury Applications
| Engine Range | Engine Type | Application Notes |
|---|---|---|
| 4HP / 5HP / 6HP | Mercury FourStroke | Select models and serial ranges |
| 8HP / 9.9HP | Mercury FourStroke | 209cc applications |
| 9.9HP ProKicker | Mercury FourStroke | Select ProKicker applications |
| 15HP / 20HP | Mercury Carbureted & EFI FourStroke | 2-cylinder applications |
| 25HP / 30HP | Mercury EFI FourStroke | 3-cylinder applications including Jet models |
| 15HP SeaPro | Mercury FourStroke | International SeaPro models |
Compatible Tohatsu Applications
| Engine Range | Engine Type | Application Notes |
|---|---|---|
| 8HP / 9.8HP | Tohatsu FourStroke | Select MFS models |
| 15HP / 20HP | Tohatsu FourStroke | Select EFI and carbureted models |
| 25HP / 30HP | Tohatsu FourStroke | Select EFI applications |
| Nissan Marine | FourStroke Outboards | Select rebadged Tohatsu applications |
OEM Part Numbers & Cross References
| Brand | Part Numbers |
|---|---|
| Mercury | 8M0214960, 853702, 853702005, 898101194 |
| Tohatsu | 3H6010320, 3H6010320M, 346010320, 346010320M, 350020320, 350020320M |
| Sierra | 18-60920 |
| Mallory | 9-60920 |
What This Thermostat Gasket is Used For
This OEM thermostat cover gasket is used to properly seal the thermostat housing during cooling system operation on compatible Mercury and Tohatsu outboards.
Replacing the gasket during thermostat service helps prevent coolant leaks, improper thermostat sealing, and cooling system pressure loss.
Thermostat gaskets are commonly replaced whenever the thermostat housing is removed for inspection, thermostat replacement, or routine maintenance.
Using the correct OEM gasket helps maintain proper fitment and sealing performance in harsh freshwater and saltwater marine environments.
Key Features and Benefits
- Genuine OEM Mercury and Tohatsu thermostat gasket
- Fits many 4HP-30HP FourStroke outboards
- Helps seal thermostat housing properly
- Supports cooling system reliability
- Common replacement during thermostat service
- Designed for marine cooling system environments
- OEM-quality fit and material construction
- Compatible with multiple Mercury and Tohatsu platforms
Thermostat Gasket Details
- Part Type: Thermostat Cover Gasket
- Primary OEM Number: 8M0214960
- Application: Mercury & Tohatsu FourStroke Outboards
- Horsepower Range: 4HP-30HP
- System: Engine Cooling System
- Use: Thermostat housing sealing
- Material: OEM marine gasket material
FAQ
What does this thermostat gasket fit?
This gasket fits many Mercury and Tohatsu-built 4-stroke outboards
ranging from 4HP through 30HP depending on model and serial range.
Should I replace the gasket when replacing the thermostat?
Yes. It is recommended to replace the thermostat gasket whenever the thermostat housing is removed to help ensure a proper seal.
Is this an OEM Mercury part?
Yes. This is a genuine OEM-style thermostat gasket cross-referenced to Mercury part number 8M0214960 and related superseded numbers.
Does this fit Tohatsu and Nissan outboards?
Yes. Many Mercury small FourStroke outboards are manufactured by Tohatsu, and this gasket also cross references to several Tohatsu and Nissan Marine part numbers.
Can a damaged thermostat gasket cause cooling issues?
Yes. A leaking or damaged gasket can contribute to improper thermostat operation, coolant leakage, or inconsistent engine temperatures.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0214960, 853702, 853702005, 898101194, 3H6010320, 3H6010320M, 346010320, 346010320M, 350020320, 350020320M, thermostat gasket, Mercury thermostat gasket, Tohatsu thermostat gasket, Mercury 25HP thermostat gasket, Mercury 30HP thermostat gasket, Tohatsu thermostat cover gasket, Nissan Marine thermostat gasket, Sierra 18-60920
3H6010320
3H6010320M
346010320
346010320M
350020320
350020320M
5040066
8M0214960
853702
853702005
898101194
F85168-1
F85168-3
F851681
F851682
F851683
18-0855
37220
F85159-1
F85159-2
F851591
F851592
18-0853
37210
18-0710
68V-14984-00-00
881325
809086