OEM Quicksilver 42909A4 Fuel Pump Diaphragm Kit for Mercury and Mariner
🛡️ PARTSDUCK Promise - Best price, great support & more
🛡️ PARTSDUCK Promise - Best price, great support & more
More than just a price match! Best price, fast shipping, great stock, real support. More Here
Free Shipping Over $99
Free Shipping Over $99
In stock items ship same or next business day from the closest of our 20+ warehouses with stock. Economy Shipping is free over $99.
Phone Support (856) 666-7986
Phone Support (856) 666-7986
Call us with questions 9-5 Monday - Friday EST.
(856) 666-7986
No Fee Returns for 30 Days
No Fee Returns for 30 Days
No restocking fees on most items, full Return Policy
Description
Description
Quicksilver 42909A4 fuel pump diaphragm kit services the compatible Mercury and Mariner applications below.
Application details
- Listed for selected three-cylinder 70/80/90 hp engines, USA serials 0A996142–0C221999.
- Selected 75/90 hp three-cylinder engines in USA range 0C222000–0D283221 require the 90-degree oil-check-valve configuration for this kit.
- Inline oil-check-valve systems use a different cataloged kit; match the actual pump configuration.
Manufacturer part number: 42909A4
Match the engine serial number and fuel-pump configuration before ordering. The applications above are selected catalog examples, not a universal horsepower fitment range.

