New Arrivals/Restock

Sierra 18-4457 Exhaust Protector Valve

flash sale iconLimited Time Sale
Until the end
10
38
16

$13.27 cheaper than the new price!!

Free shipping for purchases over $99 ( Details )
Free cash-on-delivery fees for purchases over $99
Please note that the sales price and tax displayed may differ between online and in-store. Also, the product may be out of stock in-store.
New  $22.12
quantity

Product details

Management number 236926470 Release Date 2026/07/10 List Price $8.85 Model Number 236926470
Category

The Sierra 18-4457 Exhaust Protector Valve features compounded rubber flapper valves which prevent water from entering the exhaust system. Designed to be interchangeable with the following: GLM 89250, Mallory 9-44001 Mercruiser 13644Q01, 12644A1. Each Sierra product meets or exceeds the original equipment part it replaces.

  • Made with weather resistant EPDM with U/V stabilizer
  • Size: 4 inch, includes stainless steel clamp
  • Includes: Stainless Steel Clamp
  • Interchangeable with the following: GLM 89250, Mallory 9-44001 Mercruiser 13644Q01, 12644A1
  • Compounded rubber flapper valves prevent water from entering the exhaust system
ASIN B001IWEHFI
Brand Sierra
Model Exhaust Protector Valve
Exterior Machined
Item Weight 7.2 ounces
Manufacturer Teleflex Marine
OEM Part Number MERCURY MARINE 12644A1
Item model number 18-4457
Product Dimensions 8 x 6 x 1.5 inches
Manufacturer Part Number 18-4457
Is Discontinued By Manufacturer No

Correction of product information

If you notice any omissions or errors in the product information on this page, please use the correction request form below.

Correction Request Form

Product Review

You must be logged in to post a review