Mercury - Fuel Pump Gasket - 27-34213
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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Alternate/Superseded Part Numbers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. ⚓
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3–4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
Returns & Satisfaction Guarantee
We stand firmly behind the quality of every product we sell. Your confidence matters to us — and we back it with a straightforward 30-Day Satisfaction Guarantee.
If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
To qualify for a return:
Item must be in new, unused condition
Product must be in its original packaging
All parts, components, hardware, manuals, and accessories must be included
Packaging must be undamaged and suitable for resale
Important:
Electronics are strictly inspected. No returns on open-box electronics. Exceptions may apply only with prior written approval. Any electronic unit that has been installed, powered, activated, or altered may not be eligible for return.
We are serious about product integrity — and equally serious about taking care of our customers. If there is ever a product issue, contact us immediately so we can make it right.
For return authorization, please contact our support team before shipping anything back.