UANOFCN Exhaust Elbow Gasket Kit for OMC & Volvo Penta 2‑Pc (3850495) OEM Fit, Heat‑Resistant Seal

UANOFCN 3850495 exhaust elbow gasket kit is a two-piece replacement set designed to seal the exhaust elbow on compatible OMC Stern Drive and Vo-lvo Penta engines.

When an exhaust elbow gasket fails, exhaust leaks, overheating and poor engine performance can follow. This UANOFCN replacement set includes two gaskets that match OEM cross-reference numbers so you can restore a proper seal between the exhaust elbow and manifold on many OMC and Vo-lvo Penta applications. The listing corresponds to multiple OEM part numbers and covers a range of engine sizes and years — but always verify fitment for your specific model before installation.

Which engines and years does this gasket fit?

This gasket set fits many OMC Stern Drive models and select Vo-lvo Penta engines from the 1990s through 2010. Coverage includes a broad list of small- to mid-horsepower outboard and sterndrive units, but compatibility depends on the exact engine code and model year.

• OMC Stern Drive: 100, 120, 140, 155, 165, 170, 175, 190, 225, 235, 245 HP series
• Vo-lvo Penta: 135 and 150 HP models (1993–2010)
• Also listed for various Vo-lvo engine families and GLM/GLP/GSM/GSP series variants
• Cross-references: 3850495, 908013, GLM 33770, Sierra 18-2875 and other OEM numbers

How do I know if I need to replace the exhaust elbow gasket?

Signs of a failing exhaust elbow gasket include visible exhaust or water leaks at the elbow joint, increased engine noise, or reduced cooling performance. Visual inspection during service will reveal corrosion, compressed or torn gasket material, or mineral deposits indicating leakage.

• Look for soot, rust streaks, or wetness around the elbow-to-manifold seam
• Noticeable exhaust odor or louder exhaust sounds near the stern drive
• Engine overheating or lower coolant flow through the exhaust path
• Replace with this two-piece kit when the original shows cracks, flattening, or damage

What does this replacement kit include and how does it match OEM parts?

The package contains two UANOFCN-manufactured exhaust elbow gaskets made to meet the form and function of the listed OEM references. The product matches multiple industry part numbers so it can serve as a direct replacement in systems that originally used those OEM gaskets.

• Two exhaust elbow gaskets per kit for dual-elbow or spare replacement needs
• Interchangeable with OEM references such as OMC 3850495 and Vo-lvo 908013
• Also cross-referenced with GLM 33770, Sierra 18-2875 and other vendor numbers
• Sold as replacement hardware only — gasket material selected for exhaust sealing

How should the gasket be installed and what should I check during replacement?

Install on a clean, corrosion-free mating surface with the proper torque on fasteners to avoid crush damage. Verify alignment of ports and confirm no debris or old gasket fragments remain before torquing; follow manufacturer torque specs where available.

• Clean mating surfaces thoroughly and remove old gasket residue
• Inspect elbow and manifold faces for pitting or warping; address damage before installing
• Hand-start bolts then tighten in a cross pattern to recommended torque
• Pressure-test or run the engine briefly to confirm no leaks after installation

Who is this for: Marine mechanics, DIY boat owners and service shops that maintain OMC Stern Drive and Vo-lvo Penta engines looking for a direct-fit, OEM-cross-referenced exhaust elbow gasket. If you’re preparing for a mid-season service or repairing exhaust leaks on compatible 100–245 HP OMC units or 135/150 HP Vo-lvo Penta models (1993–2010), this two-piece UANOFCN kit provides the replacement gaskets you need. Always confirm your engine’s model code and OEM part number before ordering; contact the seller with fitment questions if unsure.