2001-2004 LB7 Duramax Torque Lock Injector Cup Kit
SKU: PDM-07021K
Product Description:
2001–2004 LB7 Duramax Torque Lock Injector Cup Kit
Includes Install Tool & Hardware
Fix one of the most common LB7 Duramax failure points the right way. The Industrial Injection Torque Lock Injector Cup Kit permanently replaces the factory-pressed injector cups with a threaded, screw-in design—eliminating coolant intrusion, injector seal failures, and repeat tear-downs.
Engineered specifically for 2001–2004 GM LB7 Duramax engines, this kit includes everything needed for a professional-grade repair, including the proper install tool and all required hardware.
🔧 Key Features
-
Converts factory press-in cups to threaded screw-in cups
-
Prevents coolant leaks into the fuel system
-
CNC-machined for a precise, leak-free fit
-
Designed for long-term reliability and repeatable installs
-
Ideal for stock or performance LB7 builds
📦 What’s Included
- 8 Torque Lock Injector Cups
- 16 Injector Cup O-Rings
- 1 cylinder head tap
- 1 torque lock cup install tool
- 1 bottle taping fluid
🚘 Vehicle Fitment
-
2001–2004 GM Duramax LB7
-
Silverado & Sierra 2500HD / 3500HD
-
6.6L LB7 Diesel Engines Only
✅ Why Upgrade to Torque Lock Injector Cups?
Factory LB7 injector cups are prone to loosening and leaking over time. This screw-in design locks the cups in place, providing a permanent solution trusted by diesel shops and builders nationwide.
Built to solve the problem once—so you don’t have to do the job twice.
Perfect for injector replacements, head work, or preventative maintenance.
Note: Installation is HIGHLY recommended to be performed at a machine shop.
Free economy ground shipping on most orders over $200. This includes lower 48 United States only. Excludes products that must ship freight.
Read Carefully!
When you purchase a product from our website that has a core requirement, you have two options:
1. You choose to pay the core charge and we will ship the product right away, then once we receive the cores you will be refunded the core charge if your cores pass our inspection qualifications. This is the preferred choice and has the least delays.
2. You choose to send in your cores before we ship the product that was purchased. This choice has the risk of delayed shipment of your purchased product and our inventory is not guaranteed by the time we receive your cores. You will need to follow all of the instructions below as quickly as possible so that you can get your purchased product and we can receive the cores. When you choose this option you acknowledge that by the time we receive your cores, our inventory could have change and there could be a delay in your shipment.
Please return all cores to:
Industrial Injection Core Returns
2858 South 300 West
Salt Lake City, Utah 84115
INCLUDE RA# THAT WAS ISSUED AT TIME OF PURCHASE! If RA # is lost, please call Customer Service at (800) 955-0476. Have your original invoice at time of phone call to give all appropriate information for return.
Core return freight is the responsibility of the customer
FULL CREDIT WILL BE GIVEN WHEN:
In order to receive full core credit, your core(s) must be returned within 90 days from receipt of order. It must be as is “off the engine.” Full core credit will be given if core meets acceptance criteria. Cores that are damaged during shipment to Industrial Injection are the responsibility of the customer and their shipping company.
½ CORE CHARGE CREDIT WILL BE GIVEN WHEN:
- Slightly damaged housing or camshaft
- Missing parts such as FCA
No Core Credit issued when:
- Core is seized or hydraulic head is cracked
- Excessive damage ( Heavy use of Bio-diesel and rust are common causes for unacceptable core)
- Core is fire damaged
- Core is returned after 90 days/3months
Please do the following when returning a core:
- Make sure you have removed all fittings from your old unit
- Drain all fuel and oil from unit
- Package cores so that fuel and oil does not escape from the package
NOTE: packages that have fuel or oil residue on the outside of the box during shipping will not be delivered by UPS or the postal service which will cause delays.
- Please re-use boxes and bags that parts were shipped in originally. These boxes are UPS approved to reduce damage while being handled in freight.
- All shipping charges are the responsibility of the customer
- Please write on the box “Core Return” and have RA # clearly written on the outside of box
- Include copy of original invoice and RGA inside box
PLEASE RETAIN RA#, INVOICE # AND TRACKING NUMBER UNTIL CREDIT IS RECEIVED BY YOU. We do not research by customer name, only invoice # or RA #.
You may also like
More from Injectors
Recently viewed
