Mercury & Mariner 1987-2006 L3 60, 70, 90 HP Bigfoot Outboard Gearcase Parts Diagrams

This page offers a comprehensive selection of premium-quality replacement gearcase parts for Mercury & Mariner outboards, specifically the Bigfoot 60 HP and L3 70-90 HP models produced between 1987 and 2006. Explore essential components, including OEM-compatible shift cams (both 3-jaw and 6-jaw), clutch dog springs, clutch dog pins, cam follower kits, forward & reverse gear bearings, and complete rebuild gearcase kits. Each part is meticulously designed to match original specifications, ensuring reliable performance and longevity. If you're performing a minor repair or a complete rebuild, please take a look at all the necessary parts here to keep your outboard running smoothly.

We offer a complete rebuild kit for this gearcase as well as individual aftermarket parts. Please select from the following list or from the photos below:

Complete Rebuild Kit

The following parts correspond to the numbers on the diagram to the right:

1. Inner Forward Gear Bearing
2. Outer Forward Gear Bearing
3. Top Drive Shaft Bearing
4. Bottom Drive Shaft Bearing
5. Reverse Gear Thrust Bearing
6. Forward Carrier Gear Bearing
7. Aft Carrier Bearing
8. Cam Follower Kit
9. Gear Set
• 3 Jaw
• 6 Jaw
10. Reverse Clutch Dog
• 3 Dog
• 6 Dog
11. Clutch Dog Pin
12. Clutch Dog Spring
13. Reverse Prop Shaft
• 3 Jaw
• 6 Jaw
14. Bearing Carrier
15. Drive Shaft
16. Pinion Nut
17. Shim Kit

 We also offer the following items:

• Shift Cam
• 3 Jaw
• 6 Jaw
• Water Pump Kit
• Lower Seal Kit
• Bearing Kit