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SKU #: SD-RSTC-L5P
MPN #: SD-RSTC-L5P
Sinister Diesel Coolant Radiator Surge Tank Cap 20-26 Chevy L5P Duramax
Description
The Sinister Diesel Coolant Radiator Surge Tank Cap is a direct-fit replacement designed specifically for Chevy/GMC trucks equipped with the Duramax L5P engine. Made from quality, corrosion-resistant materials and engineered for a secure seal, this upgraded cap helps maintain proper cooling system pressure while keeping contaminants out of your coolant reservoir.
Easy to install with no tools or modifications required, this surge tank cap is an affordable way to improve reliability and complete the look of your engine bay on your Duramax powered truck.
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About WrenchConnected
WrenchConnected is an independent installation marketplace operating in partnership with Diesel Power Products.
How it works
After checkout, we route your vehicle info and part SKU to verified installation shops near you. Local installers review the job and submit competitive bids; you pick the shop you want based on price, reviews, and availability. Your name and email stay private until you select an installer.
Pricing
You pay for the bid from your preferred shop. The full amount is shown before you confirm — installers cannot add charges without your written consent. Payments are processed securely by Stripe.
Your privacy
During bidding, shops see only your service ZIP code, vehicle year/make/model, and the part SKU — not your name, email, or address. Only the shop you select receives your contact details after payment. We never sell your personal information.
More detail at wrenchconnected.com.
About Sinister Diesel
Sinister stands for everything diesel and they have made a name for themselves manufacturing some of the highest quality diesel engine components in the industry. The Sinister Diesel brand was born out of an idea from the founders while working on one of their own trucks. What if they started their own diesel performance business manufacturing and selling high quality air intake, fuel, and engine components? That idea transpired into the Sinisterl Diesel we know today. In order to make sure that when you popped the hood, you could easily distinguish a œSinister branded part from other companies, nearly everything they manufacture is coated in their trademarked œSinister Blue. Whether you drive a Cummins, Powerstroke, or Duramax, they can outfit your entire truck with cold air intakes, fuel tank sumps, oil filtration, regulated fuel return kits, and so much more. If you're looking for quality performance parts at a great price, look no further than Sinister!
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