Additional Images

DHD 700-125 Standard Flow Duramax Fuel Block Upgrade Kit LLY LBZ LMM 

700-125 - 5B
DHD Standard Fuel Block Upgrade Kit
Pricing: $84.99


DHD 700-125 Standard Fuel Block Upgrade Kit LLY LBZ LMM Duramax Diesel

DHD's standard fuel block upgrade kit eliminates the restrictive factory fuel test-port/fuel block located just rear of the alternator and replaces it with our high flow billet aluminum block. This standard kit will utilize the OEM low pressure fuel line hose (5/16) and come with everything to reroute the return and low pressure fuel supply hoses. Recommended on all high flow intake manifold upgrades.

This kit is a must for customers installing aftermarket Y-bridges and intake combinations. 


Eliminates Horsepower Robbing Fuel Restrictions

Simplifies Fuel Return Hose Routing

Eliminates interferences between fixed hard lines and your aftermarket Y-Bridge


Fits: 2001 - 2010 GM 6.6L Duramax diesel

Install Sheet: 700-125 Standard Fuel Block Upgrade Kit

Kit Review



Shipping Information

  • Item Requires Shipping
  • 5.0 lbs.
  • W10.0000” x H4.0000” x L10.0000”

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.