3852548 Gimbal Bearing Rear Oil Seal 1.375×2.1875-Inch · Fits OMC Cobra / Volvo SX·XDP select, Replaces 18-8349, 86560, 911795

3852548 Gimbal Bearing Rear Oil Seal 1.375×2.1875-Inch · Fits OMC Cobra / Volvo SX·XDP select, Replaces 18-8349, 86560, 911795

GHMarine gimbal bearing rear oil seal for select OMC Cobra / Cobra SX and Volvo Penta SX / XDP assemblies — OEM 3852548. Typical size about 1.3750-inch shaft × 2.1875-inch bore (catalog cross about 1.375 × 2.186 × 0.500). Cross-refs 18-8349, 86560, 85258; legacy 911795 / 778091 when EPC lists them. This page sells the seal only — not the bearing and not a gasket multi-pack.

Need the bearing itself → GH 20GK001 (3853807). Need gasket set 508105 → GH 23BK488 (different carton). It is not large seal 3852550, not U-joint bellow 3854127 (GH 18B5002), and not exhaust bellow 3850426 (GH 17B1010).

Which seal is this?

It is the rear oil seal at the gimbal bearing position on the listed Cobra / SX / XDP assemblies. Measure the removed seal or confirm 3852548 on the EPC before you order — size and OEM number both matter.

It is not gimbal bearing 3853807 (GH 20GK001), not gasket set 508105 (GH 23BK488), not large seal 3852550, not U-joint bellow 3854127, and not a five-piece service pack with bearing + pads + O-rings.

Signs yours is due

• Gear-lube weep or wetness at the gimbal bearing rear seal land — old seal stamped 3852548 / 18-8349 / 86560 when readable.
• Removed seal measures about 1.375 shaft × 2.1875 bore (or the catalog 1.375 × 2.186 × 0.500 envelope) and EPC lists 3852548.
• You almost ordered a full bearing + gasket layout because a photo showed five pieces — stop: this carton is the rear oil seal only.
• Divert: need bearing → GH 20GK001. Need 508105 gasket set → GH 23BK488. Need U-joint bellow → GH 18B5002.

Will it fit my drive?

This seal is Compatible with select OMC Cobra / Cobra SX and Volvo Penta SX / XDP gimbal bearing rear oil seal positions that specify 3852548. Assembly number, removed seal size, and EPC decide fit — do not order from a vague "1986–up" platform tag alone.

*Final fit = OEM 3852548 + shaft size match on the removed seal / EPC. Not a free pass for every 1986–up Cobra or XDP assembly.

OEM & swap numbers

Primary OEM 3852548. Cross-refs 18-8349, 86560, 85258. Legacy 911795 / 778091 only when EPC lists them.

Wrong part? Read before you order

• NOT gimbal bearing 3853807 (GH 20GK001)
• NOT gasket set 508105 (GH 23BK488)
• NOT large seal 3852550
• NOT U-joint bellow 3854127 (GH 18B5002)
• NOT exhaust bellow 3850426 (GH 17B1010)
• NOT a multi-piece pack with bearing + pads + O-rings

What ships in the box

• 1 × Gimbal bearing rear oil seal (3852548)

Gallery note: some photos may show a bearing + seal + pads + O-rings laid out together. The sold quantity is one rear oil seal — do not expect a bearing or gasket kit in this carton. For the 508105 multi-piece set, see GH 23BK488.

Often ordered with related SKUs

• Gimbal bearing → GH 20GK001 (3853807)
• Gasket set 508105 → GH 23BK488
• U-joint bellow → GH 18B5002 (3854127)

Install tips (rear oil seal)

Gimbal bearing rear oil seal service. Cold engine; support the boat and drive; disconnect battery; follow the OMC / Volvo Penta procedure for seal replacement at the gimbal bearing. Confirm size on the removed seal before installing 3852548. Do not install a bearing or gasket set from a multi-piece photo by mistake.

1. Confirm old seal / EPC is 3852548 and size matches (~1.375 shaft × 2.1875 bore).
2. Remove the drive / access the seal land per the service manual; extract the old seal without scoring the housing.
3. Clean the bore; oil the new seal lip lightly as the manual allows; drive the seal square to the specified depth.
4. Reassemble; check for leaks after the first run before returning the boat to service.

FAQ

Is the bearing included?

No. This page is the rear oil seal only (3852548). For the bearing, see GH 20GK001 (3853807).

Is this the same as gasket set 508105?

No. 508105 is a multi-piece gasket set (GH 23BK488). This carton is one seal.

What size is this seal?

About 1.3750-inch shaft × 2.1875-inch bore (catalog cross about 1.375 × 2.186 × 0.500). Measure the removed seal to confirm.

Will any 1986–up Cobra / XDP seal fit?

No. Confirm 3852548 and size on the removed seal or EPC — not an open-ended year tag.

Do photos show only the seal?

Some gallery shots may show a multi-piece layout. The sold quantity is one rear oil seal.

What comes in the box?

One 3852548 gimbal bearing rear oil seal.

Please note

Aftermarket replacement by GHMarine. Not affiliated with engine manufacturers named above. "Compatible with", "Replaces", and cross-ref numbers identify the 3852548 rear oil seal family — always confirm OEM number, seal size, and that the carton contains one seal before ordering.