5 Pack Diesel Common Fuel Rail Injector Cap 12mm 14mm 16mm 18mm 20mm, Fuel Rail Block off Caps Kit Fit for Cummins 2003-2022 Duramax 2001-2022 Ford 2008-2022 Replace #10810








Buy Now, Pay Later
- – 4-month term
- – No impact on credit
- – Instant approval decision
- – Secure and straightforward checkout
Ready to go? Add this product to your cart and select a plan during checkout.
Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.
Learn more about financing & leasing here.
30-day refund/replacement
To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.
To initiate a return, please visit our Returns Center.
View our full returns policy here.
Features
- Fitment: This fuel rail injector caps is suitable for various diesel engines, 12mm fuel rail injector cap fits for Ford 6.4L (2008-2010), 14mm cap fits for Ford 6.7L (2011-2022), Cummins 5.9L (2003-2009), Duramax 6.6L (2001-2005 and 2017-2022), 18mm cap fits for Duramax 6.6L (2011-2016), 20mm cap fit for Cummins 6.7L (2007-2018) and Duramax 6.6L (2006-2010)
- Package Includes: 5 pack fuel injector block off caps, 12mm (M12 x1.5), 14mm (M14 x1.5), 16mm (M16 x1.5), 18mm (M18 x1.5), and 20mm (M20 x1.5)
- Function: These fuel rail block off caps are used to block the fuel supply to cylinders or seal the common rail line. This helps to find problems with the engine, for example by checking for faulty diesel injectors or finding the cause of engine knock sounds by checking each cylinder on its own
- Easy to Use: Just install the caps on the fuel rail. If the fuel pressure increases, it means that there is a problem with the injector
Description
Package Includes: 12mm Fuel Rail Cap: M12 x 1.5, 12mm internal thread nuts. 14mm Fuel Rail Cap: M14 x 1.5, 14mm internal thread nuts. 16mm Fuel Rail Cap: M16 x 1.5, 16mm internal thread nuts. 18mm Fuel Rail Cap: M18 x 1.5, 18mm internal thread nuts. 20mm Fuel Rail Cap: M20 x 1.5, 20mm internal thread nuts. Fitment: M12 (12mm) Fuel Rail Cap: Fits for Ford 6.4L 2008-2010. M14 (14mm) Fuel Rail Cap: Fits for Ford 6.7L 2011-2022 Fits for Cummins 5.9L 2003-2009 Fits for Duramax 6.6L 2001-2005 Fits for Duramax 6.6L 2017-2022 M16 (16mm) Fuel Rail Cap: Fits for Cummins 6.7L 2019-2022. M18 (18mm) Fuel Rail Cap: Fits for Duramax 6.6L 2011-2016 M20 (20mm) Fuel Rail Cap: Fits for Cummins 6.7L 2007-2018 Fits for Duramax 6.6L 2006-2010. Function: Just install the fuel rail block-off caps on the fuel rail. If the fuel pressure increases, it means that there is a problem with the injector. These fuel rail block off caps are used to block the fuel supply to cylinders or seal the common rail line. This helps to find problems with the engine, for example by checking for faulty diesel injectors or finding the cause of engine knock sounds by checking each cylinder on its own. Multiple block-off tools can be useful, as multiple injectors returning small amounts of fuel may mimic symptoms of a single injector with excessive fuel return.
Manufacturer: TWO-DOGS Refits
Brand: TWDRET
Model: Fuel Rail Block off Caps
Item Weight: 9.6 ounces
Package Dimensions: 2.36 x 2.36 x 2.36 inches
Item model number: Fuel Rail Block off Caps
Manufacturer Part Number: Fuel Rail Block off Caps
Date First Available: March 13, 2025
Frequently asked questions
To initiate a return, please visit our Returns Center.
View our full returns policy here.
- Klarna Financing
- Affirm Pay in 4
- Affirm Financing
- Afterpay Financing
- PayTomorrow Financing
- Financing through Apple Pay
Learn more about financing & leasing here.