Industrial Injection 130lb Valve Spring Kit for 6.6L Duramax
SKU: 44B801
Product Description:
Industrial Injection 130lb Valve Spring Kit for 6.6L Duramax (2001–2016 LB7 / LLY / LBZ / LMM / LML)
Upgrade your Duramax valvetrain with the Industrial Injection 130lb Valve Spring Kit, engineered to handle higher boost pressures and increased RPM levels in performance-built 6.6L Duramax diesel engines. This complete valve spring kit helps prevent valve float under high boost conditions, allowing your engine to operate more efficiently while safely producing more horsepower and torque.
Designed for Duramax engines running over 45 PSI of boost and/or exceeding 3,200 RPM, this kit provides the strength and stability required for performance builds, towing applications, and high-horsepower diesel setups.
Each kit includes precision-matched conical valve springs, billet steel retainers, chromoly spring seats, and valve locks to ensure maximum durability, reliability, and valvetrain stability.
Whether you're building a competition Duramax, street performance truck, or heavy towing setup, the Industrial Injection 130lb valve springs deliver the valvetrain control needed to support higher boost levels and improved engine performance.
Key Features
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Helps prevent valve float in high boost Duramax engines
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Rated for up to 130 PSI boost/drive pressure
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Supports engine speeds up to 5,000 RPM
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Ideal for engines running 45+ PSI boost or over 3,200 RPM
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Complete Duramax valve spring upgrade kit
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Designed for high-performance diesel applications
Kit Includes
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32 Conical Valve Springs
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32 Billet Steel Retainers
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32 Chromoly Spring Seats
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64 Valve Locks
Duramax Fitment
Compatible with 2001–2016 GM 6.6L Duramax diesel engines, including:
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2001–2004 LB7 Duramax
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2004.5–2005 LLY Duramax
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2006–2007 LBZ Duramax
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2007.5–2010 LMM Duramax
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2011–2016 LML Duramax
Why Upgrade Duramax Valve Springs?
Higher boost and increased engine speed can cause valve float, which reduces engine efficiency and can lead to serious valvetrain damage. Upgrading to 130lb performance valve springs improves valve control, allowing your Duramax engine to safely handle increased boost pressure and higher RPM levels.
The Industrial Injection Duramax valve spring kit (44B801) provides the strength and reliability needed for performance builds, helping your engine produce more power while maintaining valvetrain stability.
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 #.
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