The Buckshot Racing #77 Billet Propshaft Bearing Carrier (43567-77) was engineered for Mercury owners who demand more than a factory replacement.
 
Precision CNC machined from a solid block of 6061 aircraft-grade aluminum, black anodized for maximum corrosion resistance, and supplied completely assembled with premium bearings, seals, retaining hardware, and a magnetic drain plug, this carrier is designed to outperform conventional cast aluminum carriers in both recreational and high-performance applications.
 
Unlike OEM cast carriers, billet aluminum provides significantly greater strength and rigidity while maintaining precise bearing alignment under heavy propeller loads. Whether you're rebuilding a stock fishing motor or a high-horsepower performance lower unit, the Buckshot Racing #77 carrier delivers the durability serious boaters expect.
 
Designed for Mercury's Legendary V6 Gearcases
 
This billet carrier is a direct replacement for Mercury OEM 43567T1 used in 2.0L, 2.4L, and 2.5L Mercury and Mariner V6 two-stroke outboards equipped with the standard 1-inch propshaft.
 
Popular applications include numerous 135 HP, 150 HP, 175 HP, and 200 HP carbureted, EFI, Laser EFI, XRi, XR2, XR4, XR6, Pro Max, Offshore, Magnum, and SportJet engines manufactured from the late 1970s through modern production. It also fits many standard-rotation Alpha One Gen I and Alpha One Gen II MerCruiser sterndrives using the same bearing carrier design.
 
Because Mercury produced numerous gearcase variations throughout the years, always verify your lower unit and OEM part number before ordering.
 
Precision CNC Machined from Solid 6061 Billet Aluminum
 
Factory bearing carriers are produced from cast aluminum, which performs well for normal recreational use but can flex under severe operating conditions. The Buckshot Racing #77 carrier is machined from solid 6061 billet aluminum, producing a significantly stronger component with exceptional dimensional accuracy.
 
The CNC machining process maintains precise bearing bores, seal locations, and carrier alignment, helping support the propshaft while maintaining proper gear mesh under heavy acceleration, surfacing propeller operation, and high-RPM performance boating.
 
The result is improved durability, greater bearing support, and long-term reliability for engines producing well beyond factory horsepower levels.
 
Integrated Magnetic Rear Drain Plug
 
One of the most valuable upgrades is the integrated rear magnetic drain plug. Unlike factory carriers, the Buckshot Racing #77 design incorporates a machined drain passage that allows gear oil to be drained directly from the rear of the lower unit.
 
This feature is especially beneficial on gearcases equipped with nose cones or other performance modifications that restrict access to the factory drain screw.
 
The magnetic drain plug continuously collects fine metallic particles suspended in the gear lubricant, making routine inspections much easier during gear oil changes.
 
Monitor Gearcase Health
 
Every gear oil change provides an opportunity to inspect the magnetic drain plug.
A light coating of extremely fine gray metallic paste is generally considered normal as gears and bearings wear during operation. However, large steel flakes, sharp metallic fragments, needle bearing rollers, or bronze particles may indicate excessive wear of gears, bearings, thrust washers, or other internal components.
 
Early detection allows repairs before catastrophic gearcase failure occurs.
 
Each Buckshot Racing #77 carrier kit includes:
 
Precision CNC-machined black anodized 6061 billet carrier
Internal retaining circlip
Long prop shaft key
Magnetic stainless steel drain plug
Drain plug sealing washer
 
Simply install the carrier using proper Mercury service procedures, refill with fresh High Performance Gear Lube, and return your lower unit to service.
 
Buckshot Racing #77 Tech Tip
 
Whenever replacing a bearing carrier, inspect the prop shaft for runout, replace the carrier O-rings, pressure-test the gearcase after assembly, and always verify bearing preload before final installation. A bent prop shaft or damaged seal surface can quickly ruin new seals, regardless of carrier quality.
 
Final Thoughts
 
The Buckshot Racing #77 Billet Propshaft Bearing Carrier is more than a replacement—it's a premium performance upgrade for Mercury V6 lower units. Precision CNC machined from 6061 billet aluminum, black anodized for superior corrosion resistance, and equipped with an integrated magnetic drain plug, it delivers greater strength, easier maintenance, and improved reliability than conventional cast carriers.
 
Whether you're restoring a classic Mercury, rebuilding a fishing motor, or preparing a high-performance 2.5L for competition, this billet carrier provides the strength, precision, and serviceability serious Mercury owners demand.
 
Replaces Mercury OEM Part Numbers
 
43567T1, 43567A1, 43567, 818763A11, 818763T11, 79398A4, 96184A1, 26-12224, 14-18323, 28-30281, Sierra 18-1567, Mallory 9-72603
 
Contact Mike at 714-697-1716 with tech questions.