Sierra 18-1402 Marine Hydraulic Lifter - Replaces 3854033, 502036 - OMC & Volvo Penta 3.0L/181 CID

The Sierra 18-1402 is a marine hydraulic lifter engineered as a direct replacement for OMC and Volvo Penta 3.0L/181 CID engines, as well as GM 2.5L/120 marine engines. Hydraulic lifters sit between the camshaft and pushrod, automatically taking up clearance in the valvetrain so valve lash stays correctly adjusted as the engine heats up and components wear. This self-adjusting action keeps valve operation quiet and consistent without manual lash adjustment, which is critical in a marine engine that runs at sustained loads and varying temperatures.

The 18-1402 is a genuine cross-reference match for OEM lifter numbers 3854033 and 502036, meaning it is built to the same fit, form, and function as those original components. It is intended for engine rebuilds, top-end refreshes, or replacing a worn or noisy lifter in engines covered by its listed fitment. Because hydraulic lifters wear as a set and affect valvetrain timing directly, installing correctly cross-referenced replacements like the 18-1402 helps maintain proper engine performance and valve life.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-1402
• Product Type: Hydraulic Lifter
• Engine Fitment: GM 2.5L/120; OMC & Volvo Penta 3.0L/181 CID
• Replaces (OEM): 3854033, 502036
• Weight: 0.26 pounds
• Product Dimensions: 1 x 1 x 1 inches
• UPC: 030999974761

Fitment

• GM 2.5L/120 marine engines
• OMC & Volvo Penta 3.0L/181 CID engines

Replaces (OEM)

• 3854033
• 502036

Frequently Asked Questions

What engines does the Sierra 18-1402 hydraulic lifter fit? The Sierra 18-1402 fits GM 2.5L/120 marine engines as well as OMC and Volvo Penta 3.0L/181 CID engines.

What OEM part numbers does the 18-1402 replace? This lifter replaces OEM numbers 3854033 and 502036, making it a direct cross-reference for those original parts.

Is the Sierra 18-1402 a hydraulic or solid lifter? It is a hydraulic lifter, which self-adjusts to take up valvetrain clearance rather than requiring manual lash adjustment like a solid lifter.

How much does the 18-1402 lifter weigh? The Sierra 18-1402 hydraulic lifter weighs 0.26 pounds.

What are the dimensions of the 18-1402? The Sierra 18-1402 measures 1 x 1 x 1 inches.

Will this lifter fit a Volvo Penta 3.0L engine? Yes, the 18-1402 is listed to fit OMC and Volvo Penta 3.0L/181 CID engines.

Can I use the 18-1402 in a GM 2.5L marine engine? Yes, the Sierra 18-1402 is fitted for GM 2.5L/120 marine engines in addition to the OMC and Volvo Penta 3.0L/181 CID application.

Do hydraulic lifters like the 18-1402 need periodic adjustment? No, hydraulic lifters such as the 18-1402 automatically compensate for valvetrain clearance and do not require manual lash adjustment.

Is the Sierra 18-1402 an OEM or aftermarket part? The 18-1402 is an aftermarket Sierra part cross-referenced to OEM numbers 3854033 and 502036 for the same fit and function.

How many lifters are needed for a full engine rebuild? The dossier for the Sierra 18-1402 does not specify a total quantity per engine; check your engine's cylinder count and lifter layout to determine how many are needed.

What symptoms indicate a hydraulic lifter like the 18-1402 needs replacing? Common signs include valvetrain noise or ticking, which a properly functioning hydraulic lifter such as the 18-1402 is designed to eliminate by maintaining correct valve clearance.