Injector Seal Kit, 12 Piece, LB7 Duramax
Overview
This 12 piece injector seal kit has the O-rings, body seals and copper washers needed to reseal 4 injectors on the 6.6L Duramax LB7. The kit is seals only and does not include injectors. Fresh seals are a must any time an injector is removed. An old seal can leak combustion gas or fuel, or let oil past the injector. One kit covers 4 injectors, so a complete 8-injector job takes 2 kits.
Key Features
- 12 pieces to seal 4 LB7 injectors
- Viton O-rings and body seals sized for the LB7 injector
- LB7 injector copper washers (GM 98486346)
- Cross-references GM 94011701, 94011699 and 98486346
Benefits
Every seal an LB7 injector needs comes in one bag, so you won't be hunting for individual O-rings or coppers in the middle of a job. Lightly lubricate the O-rings and body seals with clean engine oil before installing the injector. Make sure the copper washer seat in the cup is clean, with no old copper left behind.
Frequently Asked Questions
Does this kit include injectors?
No. This kit has only the seals needed to install your injectors: O-rings, body seals and copper washers.
How many kits do I need?
One kit seals 4 injectors. To reseal all 8 injectors, order 2 kits.
Can I reuse the old copper washers?
No. The copper washer crushes to seal the injector tip, and a reused one can leak compression into the fuel system. Always install new coppers.
What else should I replace while the injectors are out?
Also check the Injector Cup O-ring Kit, the Injector Cup Sealant and the Injector Return Line Seals Kit. For everything in one box, see the Deluxe Fuel Injector Install Kit.
Is a special tool needed to pull the injectors?
Our Fuel Injector Removal Tool Kit makes a stuck LB7 injector much easier to remove without damaging the injector or the head.
Fitment
This is the right part if your truck is:
- A 2001–2004 Chevrolet Silverado or GMC Sierra 2500HD/3500 with the 6.6L Duramax LB7
- Not a 2004.5 or newer LLY, LBZ, LMM, LML or L5P
What's Included
- (4) Injector O-rings
- (4) Injector body seals
- (4) Injector copper washers
For warranty information or to submit a claim, see our Warranty Form.