DEF Cap for 2011-2016 Isuzu NPR & More - Dorman 904-5602

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$41.99
MPN: 904-5602
Item Package Quantity: 1
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Dorman - HD Solutions Diesel Exhaust Fluid (DEF) Filler Cap P/N:904-5602
Dorman - HD Solutions Diesel Exhaust Fluid (DEF) Filler Cap P/N:904-5602
$41.99

Help keep your diesel exhaust fluid sealed in and dirt and debris out with the Dorman - HD Solutions Diesel Exhaust Fluid (DEF) Filler Cap, part number 904-5602. It fits many vehicles, among them the 2011-2016 Isuzu NPR, the 2011-2016 Isuzu NPR-HD and the 2011-2016 Isuzu NQR. See the Buyer's Guide tab for the full list.

This heavy-duty DEF cap closes the filler neck of the diesel exhaust fluid tank. It helps protect the fluid from contamination and helps keep DEF from spilling or leaking out. Dorman engineered it for durability and reliable performance, so it is a practical choice when the original cap is leaking or has worn out.

  • Direct replacement: Designed to fit and work like the original cap on the listed applications.
  • Replaces a worn cap: A dependable option when the original cap leaks or has deteriorated with wear.
  • Durable construction: Made from quality materials for dependable performance.
  • Trustworthy quality: Backed by Dorman's team of product experts in the United States and more than a century of automotive experience.

If a cracked, missing or poorly sealing cap is the problem at your DEF filler, this cap replaces it.

Interchange: 572.3008
5723008 · 8981202621 · 8981202622

This part cross-references / interchanges with the following part numbers:

572.3008, 8981202621, 8981202622

Frequently Asked Questions

What does a DEF filler cap do?

It closes the filler neck of the diesel exhaust fluid tank. It helps keep dirt, water and debris out of the fluid, and helps keep DEF from splashing or leaking out.

Which Isuzu trucks does Dorman 904-5602 fit?

It is listed for the 2011-2016 Isuzu NPR, 2011-2016 Isuzu NPR-HD and 2011-2016 Isuzu NQR, among other applications. See the Buyer's Guide tab for the full list.

What are signs a DEF filler cap may need replacing?

Signs include a cracked, broken or missing cap, a cap that no longer closes securely, or DEF residue or crystals building up around the filler neck.

Is this the diesel fuel tank cap?

No. It is a diesel exhaust fluid (DEF) filler cap for the DEF tank, not the cap for the diesel fuel tank.

How is this cap installed?

It replaces the existing cap on the DEF tank filler neck. Keep dirt out of the opening while the cap is off, and follow the vehicle's service information.