Z6_GHK6HJC0OG6S20Q8HU3K6R0G63
Z7_GHK6HJC0OG6S20Q8HU3K6R0GM5
Z7_GHK6HJC0OG6S20Q8HU3K6R0GM7
Z7_GHK6HJC0OG6S20Q8HU3K6R0Q22

Mercury 500R 4.6L V8 300 Hour Kit With Oil & Gear Lube

MER500R-300L Kit With 10W30 Full Synthetic & 85W90 Gear Lube
Item #: MER500R-300L 
Manufacturer Item: 8M0225511
Manufacturer: Mercury Marine
Available: Out of Stock
793.00
Each
Quantity:
Quantity Price
1 793.00
500R 300 Oil Kit

Mercury Racing 500R 300 Hour Service Kit With Oil & Gear Lube

Mercury 500R V8 4.6L 300 Hour Maintenance Kit With Oil

The MER500R-300L 300 Hour Service Kit is designed for Mercury Racing 500R 4.6L V8 outboards. This complete maintenance package includes the major Mercury 500R 300 hour service components plus Mercury 10W30 Full Synthetic engine oil and Mercury Extreme Performance 85W90 gear lube.

This complete version is ideal for customers who want the filters, thermostat, belts, impeller kit, spark plugs, engine oil, and gear lube needed for a Mercury Racing 500R 300 hour service in one package.

Compatible Applications

Brand Engine Displacement Service Interval
Mercury Racing 500R V8 FourStroke 4.6L 300 Hour Maintenance
Oil & Gear Lube Included:

This kit includes Mercury 10W30 Full Synthetic engine oil and Mercury Extreme Performance 85W90 gear lube.

Mercury recommends Mercury 10W30 Full Synthetic Oil , which is included in this kit.

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

Want to Use a Different Oil?

500R 300 Hour Kit Without Oil & Gear Lube

Some customers prefer to order a different recommended oil option, such as Mercury 10W30 MRX Racing Oil, or already have engine oil and gear lube on hand. The MER500R-300 kit is available without engine oil and gear lube.

View Kit Without 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
2 Gallons 8M0173224 Mercury 10W30 Full Synthetic Marine Engine Oil
1 Quart 8M0111677 Mercury Extreme Performance Gear Lube 85W90

500R Anodes & Corrosion Protection

What This Service Kit is Used For

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

This complete maintenance package supports oil filtration, fuel filtration, thermostat replacement, water pump service, spark plug replacement, supercharger and serpentine belt replacement, lower unit anode replacement, engine oil service, and gearcase lubricant service.

Key Features and Benefits

  • Designed for Mercury Racing 500R V8 4.6L outboards
  • Complete 300 hour maintenance package
  • Includes Mercury 10W30 Full Synthetic engine oil
  • Includes Mercury Extreme Performance 85W90 gear lube
  • Includes OEM Mercury filters, thermostat, belts, and impeller kit
  • Includes NGK spark plugs and lower unit anode
  • Links to related 500R anodes and maintenance parts
  • Supports scheduled Mercury Racing maintenance intervals

Service Kit Details

  • Part Number: MER500R-300L
  • Related Kit Without Oil: MER500R-300
  • Application: Mercury Racing 500R
  • Engine: V8 4.6L FourStroke
  • Service Interval: 300 Hour Maintenance
  • Oil Included: Yes - Mercury 10W30 Full Synthetic
  • Oil Quantity Included: 2 gallons
  • Gear Lube Included: Yes - Mercury Extreme Performance 85W90
  • Gear Lube Quantity Included: 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?
Yes. This version includes Mercury 10W30 Full Synthetic engine oil.

Does this kit include gear lube?
Yes. This kit includes Mercury Extreme Performance 85W90 gear lube.

What other oil does Mercury recommend?
Mercury also recommends Mercury 10W30 MRX Racing Oil for customers who prefer MRX race oil.

Is there a version without oil and gear lube?
Yes. The MER500R-300 kit without oil and gear lube is linked above.

Does this kit include the 500R service belts and thermostat?
Yes. This kit includes the thermostat, supercharger belt, serpentine belt, water pump impeller repair kit, spark plugs, filters, and lower unit anode.

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-300L, MER500R-300, Mercury 500R 300 hour service kit, Mercury Racing 500R 300 hour kit, Mercury 500R oil change kit, Mercury 500R thermostat kit, Mercury 500R impeller kit, Mercury 500R spark plugs, Mercury 500R supercharger belt, Mercury 500R serpentine belt, Mercury 10W30 Full Synthetic, Mercury 10W30 MRX Racing Oil, Mercury Extreme Performance Gear Lube 85W90, 8M0123025, 8M0204693, 8M0166596, 8M0210477, LKAR7C-9, 8M0200136, 8M0210486, 8M0142251, 8M0137814, 8M0173224, 8M0111677

Serv Kit

OEM or Aftermarket
OEM
Manufacturer
Mercury
Oil Weight
10W30
Includes and Gear Lube?
Yes