S&S Diesel 2017-2026 L5P 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
Designed for high-performance and competition diesel applications, the S&S Diesel CP3 Conversion replaces the factory high-pressure pump with a proven Bosch-based CP3 platform, delivering consistent fuel volume, improved durability, and superior RPM stability.
Each pump starts as a brand-new Bosch CP3 core and is precision-modified in-house by S&S Diesel Motorsport for maximum reliability and output. The result is smooth, linear fuel delivery all the way to 4,000 RPM while maintaining excellent efficiency and drivability.
This conversion is fully compatible with the factory low-pressure supply pump and includes an individual test report verifying flow and performance prior to shipment.
- Improved high-pressure fuel pump conversion for competition engines
- New Bosch base CP3 modified by S&S
- Maintains linear output and efficiency up to 4,000 RPM
- Compatible with the factory supply pump
- Test report included with each pump
- Available with a 10mm, 12mm, or 14mm stroker CP3
- Fits 2017 to current GM trucks with the L5P Duramax
Vehicle Fitment by Year
- 2017 GMC Sierra 2500HD – 6.6L Duramax
- 2017 GMC Sierra 3500HD – 6.6L Duramax
- 2017 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2017 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2018 GMC Sierra 2500HD – 6.6L Duramax
- 2018 GMC Sierra 3500HD – 6.6L Duramax
- 2018 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2018 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2019 GMC Sierra 2500HD – 6.6L Duramax
- 2019 GMC Sierra 3500HD – 6.6L Duramax
- 2019 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2019 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2020 GMC Sierra 2500HD – 6.6L Duramax
- 2020 GMC Sierra 3500HD – 6.6L Duramax
- 2020 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2020 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2021 GMC Sierra 2500HD – 6.6L Duramax
- 2021 GMC Sierra 3500HD – 6.6L Duramax
- 2021 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2021 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2022 GMC Sierra 2500HD – 6.6L Duramax
- 2022 GMC Sierra 3500HD – 6.6L Duramax
- 2022 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2022 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2023 GMC Sierra 2500HD – 6.6L Duramax
- 2023 GMC Sierra 3500HD – 6.6L Duramax
- 2023 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2023 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2024 GMC Sierra 2500HD – 6.6L Duramax
- 2024 GMC Sierra 3500HD – 6.6L Duramax
- 2024 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2024 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2025 GMC Sierra 2500HD – 6.6L Duramax
- 2025 GMC Sierra 3500HD – 6.6L Duramax
- 2025 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2025 Chevrolet Silverado 3500HD – 6.6L Duramax
- 2026 GMC Sierra 2500HD – 6.6L Duramax
- 2026 GMC Sierra 3500HD – 6.6L Duramax
- 2026 Chevrolet Silverado 2500HD – 6.6L Duramax
- 2026 Chevrolet Silverado 3500HD – 6.6L Duramax
