Pinion Bearing – Fits Johnson/Evinrude 35-75 HP Outboards (Replaces 386766)

$13.31 $21.00

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Pinion Bearing – Fits Johnson/Evinrude 35-75 HP Outboards (Replaces 386766) is backordered and will ship as soon as it is back in stock.

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Product Details

This Pinion Bearing is designed for Johnson/Evinrude 35–75 HP, 2-Stroke outboards manufactured between 1975 and 1988. It is specifically compatible with small gearcase applications for Johnson/Evinrude outboard lower units.

It serves as a direct replacement for OMC part 386766 and interchanges with Red Rhino R-BH1416 and SEI Marine 93-365-14.

Installation Location: Lower Unit / Gearcase
Housing Material: Steel
Designed for 2-Stroke outboard applications

Part Number Matrix

Use this matrix to confirm equivalent references across OEM and aftermarket.

Brand	Part Number
OMC	386766 / 0386766
Red Rhino	R-BH1416
SEI Marine	93-365-14

Engine & Model Compatibility

Confirm your engine model/year in the tables below.

For Johnson/Evinrude engines, this part fits various models within the 35–75 HP range from 1975–1988, primarily those with small gearcases or small housings.

Brand	Model	Rated HP	Stroke	Years	OEM Part No.	Notes
Johnson/Evinrude	Various	40	2-Stroke	1984–1988	386766	Small Gearcase
Johnson/Evinrude	Various	48	2-Stroke	1987–1988	386766	Small Gearcase
Johnson/Evinrude	Various	50	2-Stroke	1975, 1978–1988	386766	Small Housing
Johnson/Evinrude	Various	55	2-Stroke	1976–1981	386766	Small Housing
Johnson/Evinrude	Various	60	2-Stroke	1980–1987	386766	Small Housing
Johnson/Evinrude	Various	70	2-Stroke	1977–1985	386766	Small Housing
Johnson/Evinrude	Various	75	2-Stroke	1975–1987	386766	Small Housing

Brand	Model	Rated HP	Stroke	Years	OEM Part No.
Evinrude	E35AELCDE, E35AELCUD	35	2-Stroke	1986–1987	386766
Evinrude	E35ARLCDE, E35ARLCUD	35	2-Stroke	1986–1987	386766
Evinrude	E40AELCCS, E40ARLCCS, E40ATLCCS	40	2-Stroke	1988	386766
Evinrude	E40ECCS, E40ECDE, E40ECOB, E40ECRM, E40ECUD	40	2-Stroke	1984–1988	386766
Evinrude	E40ELCCS, E40ELCDE, E40ELCOB, E40ELCRM, E40ELCUD	40	2-Stroke	1984–1988	386766
Evinrude	E40RCCS, E40RCDE, E40RCOB, E40RCRM, E40RCUD	40	2-Stroke	1984–1988	386766
Evinrude	E40RLCCS, E40RLCDE, E40RLCOB, E40RLCRM, E40RLCUD	40	2-Stroke	1984–1988	386766
Evinrude	E40TECCS, E40TECDE, E40TECOB, E40TECRM, E40TECUD	40	2-Stroke	1984–1988	386766
Evinrude	E40TELCCS, E40TELCDE, E40TELCOB, E40TELCRM	40	2-Stroke	1984–1988	386766
Evinrude	E40TLCCS, E40TLCDE, E40TLCUD, E40TTLCCS	40	2-Stroke	1986–1988	386766
Evinrude	E48ESLCCC, E48ESLCUS	48	2-Stroke	1987–1988	386766
Evinrude	E50BECCS, E50BECDE, E50BECNR	50	2-Stroke	1982–1988	386766
Johnson	50542B, 50543B, 50572B, 50573B	50	2-Stroke	1975	386766
Johnson	50902C, 50903C, 50R79C, 50RL79C	50	2-Stroke	1979	386766
Johnson	50ES75B, 50ESL75B	50	2-Stroke	1975	386766
Johnson	55642E, 55643E, 55672E, 55673E	55	2-Stroke	1976	386766
Johnson	55772D, 55773D	55	2-Stroke	1977	386766
Johnson	55874S, 55875S	55	2-Stroke	1978	386766
Johnson	55974C, 55975C	55	2-Stroke	1979	386766
Johnson	55E76E, 55EL76E	55	2-Stroke	1976	386766
Johnson	55E77D, 55EL77D	55	2-Stroke	1977	386766
Johnson	55E78S, 55EL78S	55	2-Stroke	1978	386766
Johnson	55E79C, 55EL79C	55	2-Stroke	1979	386766
Johnson	70773S, 70EL77S	70	2-Stroke	1977	386766
Johnson	70873C, 70EL78C	70	2-Stroke	1978	386766
Johnson	70973R, 70EL79R	70	2-Stroke	1979	386766
Johnson	75542B, 75543B	75	2-Stroke	1975	386766
Johnson	75642D, 75643D, 75ER76D, 75ELR76D	75	2-Stroke	1976	386766
Johnson	75742S, 75743S, 75ER77S, 75ELR77S	75	2-Stroke	1977	386766
Johnson	75842C, 75843C, 75ER78C, 75ELR78C	75	2-Stroke	1978	386766
Johnson	75942R, 75943R, 75ER79R, 75ELR79R	75	2-Stroke	1979	386766
Johnson	75ESR75B, 75ESLR75B	75	2-Stroke	1975	386766

Technical Specs

Product Type: Pinion Needle Bearing
Installation Location: Lower Unit / Gearcase
Housing Material: Steel
Product Dimensions: 11.0" L × 10.5" W × 3.0" H
Weight: 2 lbs (0.91 kg)

What’s in the Box

1 x Pinion Bearing (Replaces 386766)

Installation Notes

Always consult your engine’s official service manual before beginning work.
Drain the gearcase oil completely into a suitable container.
Remove the propeller assembly and detach the lower unit from the outboard motor.
Disassemble the gearcase to access the driveshaft and pinion gear assembly, laying out parts in order.
Carefully extract the old pinion bearing, taking note of its orientation and any associated shims or washers.
Thoroughly clean the bearing housing and surrounding components of any metal shavings, debris, or old lubricant.
Press the new pinion bearing into place, ensuring it is fully and evenly seated.
Reassemble the gearcase components according to the service manual, applying new seals and gaskets as required.
Re-install the lower unit, refill with fresh, manufacturer-specified gear oil, and check for leaks before operation.

Troubleshooting & FAQ

How do I know if this pinion bearing fits my exact model?

This bearing is for Johnson/Evinrude 35–75 HP 2-stroke outboards (1975–1988) with small gearcases. The best way to confirm fitment is to match your original part number to one listed in our Part Number Matrix (OMC 386766, Red Rhino R-BH1416, SEI Marine 93-365-14) or find your engine model in the compatibility tables.

What are the signs of a failing pinion bearing?

Common symptoms of a worn or failed pinion bearing include a grinding or whining noise from the lower unit (especially when in gear), excessive vibration, or finding metal shavings in the gear oil during a change. Prompt replacement is crucial to prevent catastrophic gearcase failure.

Is this difficult to install?

Replacing a pinion bearing is an intermediate to advanced task that requires specialized tools like a bearing puller and press. It also involves correctly shimming the gears for proper backlash. We strongly recommend professional installation unless you are experienced with lower unit rebuilds and have the correct service manual.

OEM vs. Aftermarket?

This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.

Shipping speed & cost

We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.

Warranty & returns

Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.

Safety & Important Info

Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
This is an aftermarket replacement, not an OEM component.
Professional installation is recommended for safety and performance.

About Sea Sierra

Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.

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