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Home  >  Service & Oil Change Kits  >  Mercury 4 Stroke Service Kits  >  Mercury 300 Hour Service Kit  >  Mercury V8 4.6L 450R-500R 300 Hour Kit  > Mercury 500R 4.6L V8 300 Hour Service Kit Oil & Gear Lube Sold Separately

Mercury 500R 4.6L V8 300 Hour Service Kit Oil & Gear Lube Sold Separately

300 Hour Maintenance Kit for Mercury Racing 500R Outboards
Item #: MER500R-300 
Manufacturer Item: 8M0225511
Manufacturer: Mercury Marine
Available: Out of Stock
599.03
Each
Quantity:
Quantity Price
1 599.03
500R 300 Kit

Mercury Racing 500R 300 Hour Service Kit

Mercury 500R V8 4.6L 300 Hour Maintenance Kit

The MER500R-300 300 Hour Service Kit is designed for Mercury Racing 500R 4.6L V8 outboards. This kit is built for scheduled 300 hour maintenance and includes the major service items needed for the Mercury 500R service interval.

This version does not include engine oil or gear lube. Some customers prefer this kit because they want to choose their own recommended oil option or already have Mercury oil and gear lube on hand.

Compatible Applications

Brand Engine Displacement Service Interval
Mercury Racing 500R V8 FourStroke 4.6L 300 Hour Maintenance
Important Service Note:

This MER500R-300 kit is the 300 hour service kit with engine oil and gear lube sold separately.

For the complete 300 hour version with Mercury 10W30 Full Synthetic oil and Mercury Extreme Performance 85W90 gear lube included, use the MER500R-300L 300 Hour Kit With Oil & Gear Lube.

What is Included

Qty Part Description
1 8M0123025 OEM Mercury Oil Filter
2 8M0204693 Lower Unit Drain Plug Seals
1 8M0166596 OEM Mercury Fuel Filter
1 8M0210477 Thermostat Assembly
8 LKAR7C-9 NGK Spark Plugs
1 8M0200136 Water Pump Impeller Repair Kit
1 8M0210486 Supercharger Belt
1 8M0142251 Serpentine Belt
1 8M0137814 Lower Unit Aluminum Anode

Recommended Engine Oil

Engine Oil Quantity:

Mercury Racing 500R engines use approximately 7 quarts of engine oil, or 2 gallons.

Mercury recommends Mercury 10W30 Full Synthetic Oil. Mercury also recommends Mercury 10W30 MRX Racing Oil for customers who prefer MRX race oil.

This kit does not include engine oil.
Oil Type Product Quantity Required
Mercury 10W30 Full Synthetic Mercury 10W30 Full Synthetic - Gallon 2 gallons / approximately 7 quarts
Mercury 10W30 Full Synthetic Mercury 10W30 Full Synthetic - Quart 7 quarts
Mercury 10W30 MRX Racing Oil Mercury 10W30 MRX Racing Oil - Gallon 2 gallons / approximately 7 quarts

Recommended Gear Lube

Gear Lube Quantity:

Mercury Racing 500R lower units use approximately 1 quart of gear lube.

This kit does not include gear lube.
Gear Lube Product Quantity Required
Mercury Extreme Performance Gear Lube 85W90 Mercury Extreme Performance Gear Lube 85W90 1 quart

Want the Complete 300 Hour Kit With Oil & Gear Lube?

500R 300 Hour Kit With Oil & Gear Lube

The MER500R-300L kit includes the 300 hour service kit plus Mercury 10W30 Full Synthetic engine oil and Mercury Extreme Performance 85W90 gear lube.

View Kit With Oil & Gear Lube

Related 500R Service Kits

500R 300 Hour Oil Kit

500R 300 Hour Kit With Oil & Gear Lube

Complete 300 hour maintenance kit for Mercury Racing 500R outboards with oil and gear lube included.

View Product
500R 100 Hour Kit

500R 100 Hour Service Kit

Mercury Racing 500R 100 hour service kit. Oil and gear lube sold separately.

View Product
500R 100 Hour Oil Kit

500R 100 Hour Kit With Oil & Gear Lube

Complete 100 hour maintenance kit with Mercury 10W30 Full Synthetic oil and Extreme Performance 85W90 gear lube.

View Product

500R Anodes & Corrosion Protection

500R Manifold Anode

Trim Manifold Anode

Mercury 500R trim manifold anode. Quantity used: 1.

View Product
500R Trim Anode

Small Block Trim Anode

Mercury 500R small block trim anode. Quantity used: 2.

View Product
500R Plate Anode

Trim Steering Plate Anode

Mercury 500R trim steering plate anode. Quantity used: 1.

View Product
500R Lower Anode

Lower Unit Anode

Mercury 500R lower unit aluminum anode. Quantity used: 1.

View Product

What This Service Kit is Used For

The MER500R-300 service kit is used for scheduled 300 hour maintenance on Mercury Racing 500R 4.6L V8 outboards.

This kit is ideal for customers who want the core 300 hour service kit but prefer to order engine oil and gear lube separately.

Key Features and Benefits

  • Designed for Mercury Racing 500R V8 4.6L outboards
  • Built for scheduled 300 hour maintenance
  • Oil and gear lube sold separately
  • Allows customers to choose Mercury 10W30 Full Synthetic or 10W30 MRX Racing Oil
  • Pairs with Mercury Extreme Performance 85W90 gear lube
  • Complete MER500R-300L version with oil and gear lube linked above
  • Includes links to related 500R service kits and anodes

Service Kit Details

  • Part Number: MER500R-300
  • Related Kit With Oil & Gear Lube: MER500R-300L
  • Application: Mercury Racing 500R
  • Engine: V8 4.6L FourStroke
  • Service Interval: 300 Hour Maintenance
  • Oil Included: No
  • Gear Lube Included: No
  • Recommended Oil Capacity: 7 quarts / 2 gallons
  • Recommended Gear Lube Capacity: 1 quart

FAQ

What engine does this kit fit?
This kit fits Mercury Racing 500R 4.6L V8 outboards.

Does this kit include engine oil?
No. Engine oil is sold separately with this version.

Does this kit include gear lube?
No. Gear lube is sold separately with this version.

Is there a version with oil and gear lube included?
Yes. The MER500R-300L kit with Mercury 10W30 Full Synthetic oil and Mercury Extreme Performance 85W90 gear lube is linked above.

What oil is recommended for the Mercury 500R?
Mercury recommends 10W30 Full Synthetic oil. Mercury 10W30 MRX Racing Oil is also a recommended option for customers who prefer MRX race oil.

How much gear lube does the 500R use?
The Mercury Racing 500R lower unit uses approximately 1 quart of Mercury Extreme Performance 85W90 gear lube.

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.

Apply for a Dealer Account

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.
  • Maintenance kits must be new, unused, and in original packaging.
  • Opened oil and lubricants may not be 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

MER500R-300, MER500R-300L, Mercury 500R 300 hour service kit, Mercury Racing 500R 300 hour kit, Mercury 500R maintenance kit, Mercury 500R oil sold separately, Mercury 500R gear lube sold separately, Mercury 500R 4.6L V8 service, Mercury 10W30 Full Synthetic, Mercury 10W30 MRX Racing Oil, Mercury Extreme Performance Gear Lube 85W90, 8M0173224, 8M0173223, 8M0169265, 8M0111677, 8M0218976, 8M0204939, 38021, 8M0137814

Serv Kit

OEM or Aftermarket
OEM
Manufacturer
Mercury
Includes and Gear Lube?
No