S&S Diesel Motorsports LML Duramax CP3 Conversions
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
AVAILABLE OPTIONS:
- 50 State LML CP3 conversion kit w/pump – CARB EO #D-756-4 – No Tuning Required
- LML CP3 conversion kit w/pump – No Tuning Required
- LML CP3 conversion kit w/pump – Tuning Required
- LML CP3 conversion kit w/o pump
S&S Diesel Motorsport®, the world leader in common-rail diesel injection, has developed an innovative solution to tackle the CP4.2 high-pressure pump failures that have become a significant issue for the LML Duramax engine. Our approach is simple yet effective: replace the problematic CP4.2 with a reliable, robust CP3 high-pressure fuel pump before any issues arise.
Known as the Achilles heel of the LML Duramax engine, the CP4 high-pressure pumps suffer from high failure rates that can lead to catastrophic damage, often affecting the entire high-pressure system, including injectors, rails, and lines. To address this, S&S Diesel Motorsport proudly offers the first CARB-compliant (EO #D-756-4) 50 State CP3 conversion available for the LML. This comprehensive kit includes all the necessary hardware to replace the troublesome CP4 with a durable CP3, requires no tuning changes, and maintains factory emissions control equipment—all for a competitive price of $2,600 MAP.
Additionally, S&S provides two other versions of the LML CP3 conversion kits tailored for competition applications that do not require after-treatment. These options include one version requiring tuning for $1,780.00 MAP and a drop-in version that does not require tuning for $2,175.00 MAP. For assistance with these options, please contact FASS Motorsports.
SKU: SSDLML-CP3-CARB
