Elbow-Manifold Gasket – Fits OMC 2.3L (Replaces REC878982, 912477)
Elbow-Manifold Gasket – Fits OMC 2.3L (Replaces REC878982, 912477) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Elbow-Manifold Gasket – Fits OMC 2.3L (Replaces REC878982, 912477)
Product Details
This Elbow-Manifold Gasket is engineered for the exhaust elbow of OMC 2.3L inboard engines, ensuring a precise seal between the exhaust elbow and the manifold.
It serves as a direct replacement for OEM part numbers 912477 and REC878982.
- Easy to install between the exhaust elbow and manifold.
- Designed specifically for the OMC 2.3L exhaust elbow environment.
- Includes one gasket for a complete replacement.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| OMC | 912477 |
| Aftermarket | REC878982 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
| Brand | Model | OEM Part No. |
|---|---|---|
| OMC | 2.3L | 912477 |
Technical Specs
- Product Type
- Elbow-Manifold Gasket
- Installation Location
- Between exhaust elbow and manifold
- Dimensions
- 18.0" L x 15.5" W x 0.5" H
- Weight
- 0.96 ounces (0.027 kg)
- Fitment
- Designed for OMC 2.3L exhaust elbow
What’s in the Box
- 1 x Elbow-Manifold Gasket (Replaces REC878982/912477)
Installation Notes
- Ensure the engine is completely cool and the battery is disconnected before starting.
- Carefully unbolt and remove the exhaust elbow from the manifold.
- Remove the old gasket. Thoroughly clean both mating surfaces, ensuring they are free of all old gasket material, carbon, and debris.
- Place the new gasket into position, aligning it with the bolt holes.
- Re-attach the exhaust elbow and tighten the bolts in a crossing pattern to the manufacturer's specified torque. Do not overtighten.
- After a brief initial run, allow the engine to cool and re-check the torque of the elbow bolts.
Troubleshooting & FAQ
How do I confirm this gasket fits my engine?
This gasket is specifically designed for OMC 2.3L inboard engine models. Check the compatibility table and verify your OEM part number is 912477. When in doubt, compare the gasket shape in the product images to your old part.
What are signs of a failing elbow-to-manifold gasket?
Common symptoms include visible water leaks or drips from the joint between the manifold and elbow, rust stains originating from the joint, steam in the engine compartment, or engine overheating alarms.
Should I use sealant with this gasket?
Most modern gaskets of this type are designed for dry installation. Applying sealant can sometimes cause the gasket to slip or create an uneven seal. Always refer to your engine's official service manual for guidance.
How often should this gasket be changed?
There's no fixed replacement interval. This gasket should be replaced any time the exhaust elbow is removed, or immediately if you detect signs of a leak. It's a wear item that degrades over time from heat and corrosion.
Is this part different from the OEM version?
This is an aftermarket part designed to meet or exceed OEM specifications for fit, form, and function. It offers a cost-effective solution without compromising quality or performance.
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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