Additional Images

DHD 100-681 5/8" Transmission Cooler Line Kit 2001-2005 Duramax LB7 LLY

100-681 - 7C
Fits LB7 LLY
Was: $269.00
Sale: $229.00
Save: 15%
Save: $40.00

Free Shipping


If our hardcore hooker line sets don't fit your budget, consider replacing your hard lines with these 5/8" flexible hose kits. Our flex cool hose kits are constructed of super durable hydraulic hose and comes with all the fittings you might need to complete the install. 


  • Heavy Duty 5/8" Braided Hydraulic Hose
  • Industrial JIC Steel Swivel Fittings
  • Eliminates Leak Prone Push Connect OE Cooler Line Fittings
  • Hose rated @ 300 PSI Working & 1200 PSI Burst
  • Includes all 3 Hoses, Transmission to Radiator, Radiator to Front Cooler, Front Cooler to Transmission
  • Each fitting package is hand selected by DHD staff so you get the right fittings, every time.
  • Includes Small and Large Port Bellhousing Fittings Specific to LB7 LLY trucks.
  • Includes Multiple Aux. Cooler Fitting Options (Match Threads to Original)


You may need to order Setrab M22 Metric Fittings if you have an aftermarket Radiator or Aux Cooler.

Compare to:

  •  Deviant 73421

Instructions: CLICK HERE



Shipping Information

  • Item Requires Shipping
  • 14.0 lbs.
  • W16.0000” x H16.0000” x L4.0000”
  • Free Shipping

Customer Reviews

Comment Total Reviews (0)

Write the First Review!

You must login to post a review.