Free Shipping on orders over $199 - Continental U.S. only. Restrictions apply.
Dynomite Diesel

Dynomite Diesel Duramax LLY, LBZ & LMM Injector Return Line Kit

SKU: DDPDMAXRETURN-KIT

$80.75

🔔 Important Notice: This product may be temporarily out of stock. Orders are still accepted, but additional processing time may be required before shipping. Contact us to confirm current availability.

Usually ready in 24 hours
Free Shipping on Orders Over $199
Expert Support — Call or Text Anytime

Replacement injector return line kit for 2004.5-2010 LLY, LBZ, and LMM Duramax engines. The original factory return line assemblies easily crack or break when removed, so this kit is designed to be installed anytime an injector is replaced or removed.

Provides a reliable drop-in solution to finish your injector installation without worrying about a leak or old, brittle plastic return line fittings.

Includes:

  • All 8 injector return lines
  • Return hose
  • Fittings
  • Retaining clips

Details:

  • Liter: 6.6
  • Engine: LLY, LBZ & LMM Duramax
  • Years: 2004.5-2010
  • Fuel Type: Diesel
  • Condition: New

CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

📌 Before You Complete Your Purchase — please review the important information below regarding product accuracy, pricing, inventory, and return policies.

Terms & Conditions

While we strive for accuracy, FrankBUILT Performance does not warrant that product descriptions, prices, or other content is error-free. Prices are subject to change without notice. In the event of an error, we reserve the right to cancel or correct any order. Inventory availability is not guaranteed.

Shipping & Returns

It is the customer's responsibility to verify product fitment before placing an order. If you receive the wrong item due to an error in our listing, we will work to resolve the issue. Returns may be subject to a restocking fee. Items must be unused and in original packaging.

2-Year Warranty

FrankBUILT transmissions only - unlimited miles

Free Shipping $199+

Continental U.S., restrictions apply

Transmissions Built In-House

Every build assembled by our team

Expert Support

Team ready to help