Sierra makes OEM-replacement engine parts that cross-reference to the original numbers. Find the gasket, seal, or O-ring for your motor and skip the dealer markup. Cross reference by OEM number Sierra has built aftermarket marine engine parts for decades. The catalog covers gaskets, seals, O rings, and small components that keep an outboard or sterndrive running. The main value of Sierra lies in cross reference. Their parts replace the original equipment piece and deliver the same fit and function, usually at lower cost than a dealer. The key to ordering correctly is matching the part to your engine. Cross reference by OEM number The fastest way to get the right part is the original equipment number. Sierra lists the OEM...
Discover Reliable Performance with the Sierra 18-2970 Head Gasket Engineered as a direct replacement for Volvo part 1378646-2, this head gasket from Sierra Engine Parts stands out in...
Why Choose the Sierra 18-2968 Head Gasket for Your Volvo Penta Engine? When it comes to maintaining peak performance in your marine engine, a reliable head gasket is...
Why Choose the Sierra 18-2962 Head Gasket for Your OMC Engine? Replacing a worn head gasket in your OMC outboard can breathe new life into an engine that's...
Restoring the seal on your outboard engine's combustion chamber has never been more straightforward with a reliable cylinder head gasket like this one. Designed for precision fitment, it...
Precision Engineering for Reliable Performance Marine engines demand seals that withstand extreme pressures, heat, and constant exposure to saltwater. This Sierra head gasket steps up as a direct...
Ensuring your outboard engine runs at peak performance starts with a reliable head gasket. The Sierra 18-2952 head gasket, a trusted replacement for OEM reference 203034, delivers the...
Upgrading or repairing your Chevy engine's valve cover setup demands reliability without compromise. The Sierra 18-2845 gasket steps in as a robust replacement for the OEM 27-11999, engineered...
Why Choose the Sierra Push Rod Cover Gasket for Your GM 3.0L Engine? Keeping your marine engine running smoothly starts with reliable seals like the Sierra push rod...
Upgrade Your OMC Engine with a Reliable Exhaust Hose Replacement Keeping your outboard or sterndrive engine running smoothly means paying close attention to critical components like the exhaust...
Enhance Your Outboard's Reliability with the Right Clutch Housing Seal Kit When your boat's engine starts showing signs of fluid leaks or reduced performance, the clutch housing seals...
Keep your Johnson or Evinrude outboard running smoothly on the water with the Sierra 18-2692 Gear Housing Seal Kit. Designed as a reliable aftermarket solution, this kit tackles...
Keep your Johnson or Evinrude outboard running smoothly on the water with the Sierra 18-2683 Gear Housing Seal Kit. This essential maintenance kit targets the lower unit, where...
Keep your outboard running smooth and leak-free with a reliable gear housing seal kit designed specifically for Johnson and Evinrude engines. Whether you're dealing with persistent oil leaks,...
Keep your Johnson or Evinrude outboard running smoothly on the water with the Sierra gear housing seal kit. Designed as a reliable aftermarket solution, this kit tackles the...
Why Choose the Sierra 18-2671 OMC Seal Kit for Your Outboard Motor? Keeping your OMC outboard engine running smoothly starts with reliable seals that prevent leaks and protect...
Keep your outboard motor running smoothly with the Sierra 18-2659 seal, a reliable aftermarket replacement for the OMC 396355 crankshaft seal. Designed for marine enthusiasts who demand durability...
Upgrading or replacing the shift cable on your Bravo sterndrive doesn't have to be a headache. This Sierra shift cable kit steps in as a reliable aftermarket solution,...
Keep your outboard motor running smoothly with the Sierra 18-2597 Seal Kit, a reliable replacement designed for marine enthusiasts who demand top performance on the water. This precision-engineered...
Keep Your Boat's Steering Smooth and Reliable Overheating power steering fluid can turn a peaceful day on the water into a nightmare of stiff steering and potential breakdowns....
Keep your Johnson or Evinrude outboard running smooth as silk with the Sierra 18-2582 carburetor bowl gasket. Boat owners know the frustration of fuel leaks or erratic idling...
Discover the Reliability of Sierra 18-2537 Rubber Seal for OMC Engines Keeping your outboard or sterndrive engine running smoothly starts with quality components like the Sierra 18-2537 rubber...
Keep your outboard motor running smoothly with the Sierra 18-2534 Spaghetti Seal 55-15, a reliable aftermarket essential designed for precise sealing in demanding marine environments. This high-quality seal...
Enhance Your Volvo Penta Engine Reliability with the Sierra 18-2366 Bushing Maintaining the smooth operation of your marine engine starts with quality components like the Sierra 18-2366 bushing,...
Understanding the Role of a Shaft Key in Your Outboard Motor Every time you hit the throttle on your boat, the shaft key works quietly behind the scenes...
Sierra makes OEM-replacement engine parts that cross-reference to the original numbers. Find the gasket, seal, or O-ring for your motor and skip the dealer markup.
Sierra has built aftermarket marine engine parts for decades. The catalog covers gaskets, seals, O rings, and small components that keep an outboard or sterndrive running. The main value of Sierra lies in cross reference. Their parts replace the original equipment piece and deliver the same fit and function, usually at lower cost than a dealer. The key to ordering correctly is matching the part to your engine.
The fastest way to get the right part is the original equipment number. Sierra lists the OEM numbers each part replaces. If you have the Mercury, MerCruiser, OMC, Johnson, Evinrude, or Yamaha part number from the old piece or the parts diagram, you can match it directly. Pulling the number off the worn part beats guessing every time.
If you do not have the OEM number, you need the engine make, horsepower, model, and year to narrow it down. Marine engines changed components across model years, so the year matters as much as the horsepower. Have that information in hand before you order so the gasket or seal actually seats.
This collection focuses on the sealing parts that fail with age and heat. Examples include water pump gaskets, oil pan gaskets, carburetor mount gaskets, powerhead seals, and O rings. When you are in there for one repair, replace the related gaskets and seals around it while the unit is apart. It is cheap insurance against pulling the same cover twice.
For common jobs like a water pump rebuild or a powerhead reseal, Sierra offers gasket sets and kits that bundle every piece the job needs. A kit saves you from discovering a missing O ring halfway through the rebuild with the boat in pieces.
Sierra parts are built to marine standards, not generic automotive substitutes. They handle the heat, vibration, and corrosion a marine engine produces. That quality lets them stand in for the OEM piece with confidence.
Not sure which part fits your motor. Give our crew your engine make, model, year, and the OEM number if you have it. We will match the exact Sierra part so the repair goes back together right.
The fastest way is the original equipment number. Sierra lists the OEM numbers each part replaces, so match the Mercury, OMC, or Yamaha number off the old part or parts diagram. Otherwise use your engine make, model, horsepower, and year.
Sierra parts are engineered to replace the original equipment piece with the same fit and function. They are built to marine standards rather than generic automotive substitutes and handle the heat, vibration, and corrosion a marine engine sees.
Marine engines changed components across model years, so the same horsepower can take different parts depending on the year. Have the make, model, year, and OEM number ready so the gasket or seal seats correctly.
Yes. When a unit is apart for one repair, replace the related gaskets, seals, and O rings around it. It is cheap insurance against having to pull the same cover again a season later.
Yes. For common jobs like a water pump rebuild or powerhead reseal, Sierra offers gasket sets that bundle every piece the job needs, so you are not stuck mid rebuild missing one O ring.
