Description

The Mercury Quicksilver Fuel Pump Gasket 27-34213 is an OEM-style mounting gasket used between the mechanical fuel pump and engine block on compatible MerCruiser gasoline engines. It helps seal the fuel pump mounting flange to prevent crankcase oil seepage at the block.

Key Features

• Genuine Mercury/Quicksilver fuel pump gasket
• Part number: 27-34213
• Also referenced as 34213
• Mechanical fuel pump-to-engine block mounting gasket
• Approximate dimensions: 3.00″ L x 3.00″ W x 0.25″ H
• GTIN / UPC: 745061137059
• Used on select mechanical fuel pump applications

Engine Compatibility

Used on select classic MerCruiser gasoline engines with mechanical fuel pumps, including 2.5L / 110, 3.0L / 120 / 140, inline-6 150 / 160, and various classic GM-based V6 and V8 marine engine configurations.

Serial Number Fitment Notice

Verify fitment by engine serial number, fuel pump style, and parts diagram before ordering. Mechanical fuel pump gasket fitment can vary by engine block, fuel pump base, and production range.

When This Part Needs Replacement

Replace this gasket whenever the mechanical fuel pump is removed, or if there is oil seepage, gasket damage, hardening, tearing, or leakage at the pump mounting flange.

Installation Notes

Clean the engine block and fuel pump mounting surfaces before installation. Do not reuse a compressed or torn gasket. Inspect the fuel pump arm, mounting bolts, and surrounding area for oil or fuel leaks after reassembly.

Alternate/Superseded Part Numbers

Primary Mercury references: 27-34213 and 34213. Common aftermarket interchanges include Sierra Marine 18-0889, GLM Marine 31360, Mallory Marine 9-34213, Pleasurecraft 3705042, and Volvo Penta 3852095.

Parts Desk Insight

This gasket is small but important. If it is reused after fuel pump service, it can seep oil at the block and make it look like a bigger engine leak than it really is.

Shipping: Ships same or next day for fast Canada wide shipping.