OEM Quicksilver Mercury / MerCruiser Screw, 3/8-16 x 2-1/2 in – 668631
🛡️ 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
OEM Quicksilver Mercury / MerCruiser Screw, 3/8-16 x 2-1/2 in – 668631
Description
Description
Quicksilver 668631 is a 2-1/2-inch screw used at specified engine locations on compatible Mercury outboards and MerCruiser engines.
Product details
- Manufacturer part number: 668631.
- 3/8-16 thread; 2-1/2-inch length.
- One screw.
Fitment and selection
Verified applications include Design I cylinder-head hardware on Mercury 200 HP outboards, serial numbers 5624878–0C100860, and exhaust-elbow hardware on select MerCruiser 3.0L engines. Confirm the part number, mounting position and engine or drive serial number in the applicable parts diagram before ordering.
