Sierra 18-4806 Upper Gear Housing Complete
Sierra 18-4806 Upper Gear Housing Complete
Upper Gear Housing Complete for 4.3L and 3.0L High Altitude OMC, Volvo - Special Order est. 10 Days
Upper Gear Housing Complete, 21: 19 Ratio
For:
- 4.3L
- 3.0L high altitude OMC Cobra (1986-93)
- OMC 0986380, 0984765
- GLM 29940
- Volvo 3858908
California Residents: 
WARNING Cancer and Reproductive Harm - P65Warnings.ca.gov
Need Help Finding the Right Part?
Get real fitment help from a marine business—not a generic marketplace.
Built for the Job. Backed by Drydock.
Order With Confidence
Marine fitment can depend on model, year, serial range, and prior service history. Confirm those details before installation.
Will This Part Fit?
Match the manufacturer part number, engine or drive model, and serial number range before ordering.
- Check the current part number and any superseded numbers
- Verify engine or drive model and serial number
- Send photos when identification is uncertain
Verify before installing.
Compare the removed part, mounting points, electrical connections, and manufacturer numbers before opening sealed packaging or beginning installation.
Quick Specifications
- Brand
- Sierra Marine
- Part Number
- SIE-18-4806
- Product Type
- OMC Cobra Sterndrive Parts
- Availability
- In Stock
- Support
- Fitment help available
Commonly Needed Alongside This Part
Use these quick searches to find related maintenance and installation items. Confirm compatibility before ordering.
Everything You Need Before Ordering
Fitment & Part Verification +
Shipping Information +
Returns & Exchanges +
Warranty Support +
Technical Support +
Why Buy From Drydock Marine?
National e-commerce convenience backed by a real Western New York marine service, propeller, and parts operation.
Let Us Find the Right Part
Send your serial number, model information, and photos. We will help identify the best available option.
