Duramax: 2019-2026 (3.0L)

Duramax: 2001-2004 (LB7)

Duramax: 2004.5-2005 (LLY)

Duramax: 2006-2007 (LBZ)

Duramax: 2007.5-2010 (LMM)

Duramax: 2011-2016 (LML)

Duramax: 2017-2019 (L5P)

Duramax: 2020-2025 (L5P)

Sinister Diesel 5″-6″ AR-15® Exhaust Tip (SDEXHSTAR56) Universal

SKU: SDEXHSTAR56
$401.31

The Sinister Diesel AR-15 exhaust tip is designed to resemble the quad-rail handguard of an AR-15 rifle. Made of stainless steel with a powder-coated finish, it features a 5-inch inlet and 6-inch outlet for compatibility with diesel truck exhaust systems. Its dual-wall design helps with heat dissipation, and installation is quick and easy with basic tools.

Sinister Diesel 4″-6″ AR-15® Exhaust Tip (SDEXHSTAR46) Universal

SKU: SDEXHSTAR46
$394.49

The Sinister Diesel AR-15 exhaust tip is designed to resemble the quad-rail handguard of an AR-15 rifle. Made of stainless steel with a powder-coated finish, it features a 4-inch inlet and 6-inch outlet for compatibility with diesel truck exhaust systems. Its dual-wall design helps with heat dissipation, and installation is quick and easy with basic tools.

Sinister Diesel 4″-5″ AR-15® Exhaust Tip (SDEXHSTAR45) Universal

SKU: SDEXHSTAR45
$375.38

The Sinister Diesel AR-15 exhaust tip is designed to resemble the quad-rail handguard of an AR-15 rifle. Made of stainless steel with a powder-coated finish, it features a 4-inch inlet and 5-inch outlet for compatibility with diesel truck exhaust systems. Its dual-wall design helps with heat dissipation, and installation is quick and easy with basic tools.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-8″ Chrome (SDETAC58P) Universal

SKU: SDETAC58P
$288.00

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any vehicle with a 5″ exhaust tailpipe, including Powerstroke, Cummins, and Duramax. Made from corrosion-resistant stainless steel for durability, it expands the exhaust outlet from 5″ to 8″ with a rounded edge. A high-quality chrome finish helps conceal soot, while a riveted Sinister Diesel logo completes the design.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-8″ Blue (SDETAC58BLU) Universal

SKU: SDETAC58BLU
$380.84

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any vehicle with a 5″ exhaust tailpipe, including Powerstroke, Cummins, and Duramax. Made from corrosion-resistant stainless steel for durability, it expands the exhaust outlet from 5″ to 8″ with a rounded edge. A high-quality Sinister Diesel Blue finish helps conceal soot, while a riveted Sinister Diesel logo completes the design.

 

Due to high demand, we are currently experiencing long lead times on this product

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-8″ Black (SDETAC58B) Universal

SKU: SDETAC58B
$288.00

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any vehicle with a 5″ exhaust tailpipe, including Powerstroke, Cummins, and Duramax. Made from corrosion-resistant stainless steel for durability, it expands the exhaust outlet from 5″ to 8″ with a rounded edge. A high-quality Sinister Diesel Black finish helps conceal soot, while a riveted Sinister Diesel logo completes the design.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-7″ Chrome (SDETAC57P) Universal

SKU: SDETAC57P
$247.05

The Sinister Diesel Dual Wall Exhaust Tip gives your diesel truck a bold look with its angled cut design. Made from corrosion-resistant stainless steel, it ensures durability and long life. Designed to fit any 5″ tailpipe, it expands to a 7″ outlet and features a high-quality chrome finish to conceal soot. The exhaust tip is completed with a riveted Sinister Diesel logo for a stylish touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-7″ Blue (SDETAC57BLU) Universal

SKU: SDETAC57BLU
$353.54

The Sinister Diesel Dual Wall Exhaust Tip gives your diesel truck a bold look with its angled cut design. Made from corrosion-resistant stainless steel, it ensures durability and long life. Designed to fit any 5″ tailpipe, it expands to a 7″ outlet and features a high-quality Sinister Diesel blue finish to conceal soot. The exhaust tip is completed with a riveted Sinister Diesel logo for a stylish touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-7″ Black (SDETAC57B) Universal

SKU: SDETAC57B
$247.05

The Sinister Diesel Dual Wall Exhaust Tip gives your diesel truck a bold look with its angled cut design. Made from corrosion-resistant stainless steel, it ensures durability and long life. Designed to fit any 5″ tailpipe, it expands to a 7″ outlet and features a high-quality black finish to conceal soot. The exhaust tip is completed with a riveted Sinister Diesel logo for a stylish touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-6″ Chrome (SDETAC56P) Universal

SKU: SDETAC56P
$238.86

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any 5″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it features a 5″ inlet, a 6″ outlet with an angle-cut edge, and a high-quality chrome finish. A riveted Sinister Diesel logo provides a distinctive touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-6″ Blue (SDETAC56BLU) Universal

SKU: SDETAC56BLU
$326.24

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any 5″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it features a 5″ inlet, a 6″ outlet with an angle-cut edge, and a high-quality Sinister Diesel blue finish. A riveted Sinister Diesel logo provides a distinctive touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 5″-6″ Black (SDETAC56B) Universal

SKU: SDETAC56B
$238.86

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any 5″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it features a 5″ inlet, a 6″ outlet with an angle-cut edge, and a high-quality black finish. A riveted Sinister Diesel logo provides a distinctive touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 4″-8″ Chrome (SDETAC48P) Universal

SKU: SDETAC48P
$272.99

The Sinister Diesel Dual Wall Exhaust Tip enhances the look of diesel trucks with a 4″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it expands the outlet to 8″ with an angled cut edge. The tip features a high-quality chrome finish and a riveted Sinister Diesel logo for a bold appearance.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 4″-8″ Blue (SDETAC48BLU) Universal

SKU: SDETAC48BLU
$367.19

The Sinister Diesel Dual Wall Exhaust Tip enhances the look of diesel trucks with a 4″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it expands the outlet to 8″ with an angled cut edge. The tip features a high-quality Sinister Diesel blue finish and a riveted Sinister Diesel logo for a bold appearance.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 4″-8″ Black (SDETAC48B) Universal

SKU: SDETAC48B
$272.99

The Sinister Diesel Dual Wall Exhaust Tip enhances the look of diesel trucks with a 4″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it expands the outlet to 8″ with an angled cut edge. The tip features a high-quality black finish and a riveted Sinister Diesel logo for a bold appearance.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 4″-6″ Chrome (SDETAC46P) Universal

SKU: SDETAC46P
$232.04

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any vehicle with a 4″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it expands from a 4″ inlet to a 6″ outlet with an angled cut edge. The high-quality chrome finish provides a clean look, and a riveted Sinister Diesel logo adds a stylish touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 4″-6″ Blue (SDETAC46BLU) Universal

SKU: SDETAC46BLU
$312.59

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any vehicle with a 4″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it expands from a 4″ inlet to a 6″ outlet with an angled cut edge. The high-quality Sinister Diesel blue finish provides a clean look, and a riveted Sinister Diesel logo adds a stylish touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 4″-6″ Black (SDETAC46B) Universal

SKU: SDETAC46B
$232.04

The Sinister Diesel Dual Wall Exhaust Tip adds a bold look to any vehicle with a 4″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it expands from a 4″ inlet to a 6″ outlet with an angled cut edge. The high-quality black finish provides a clean look, and a riveted Sinister Diesel logo adds a stylish touch.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 4″-5″ Chrome (SDETAC45P) Universal

SKU: SDETAC45P
Original price was: $173.24.Current price is: $131.99.

The Sinister Diesel Dual Wall Exhaust Tip enhances the look of trucks with a 4″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it expands the outlet to 5″ with an angled cut edge. It features a high-quality chrome finish and a riveted Sinister Diesel logo for a bold appearance.

 

All sales are final for clearance items. Only valid while supplies last.

Sinister Diesel Dual Wall Exhaust Tip w/angle Cut 4″-5″ Black (SDETAC45B) Universal

SKU: SDETAC45B
$225.21

The Sinister Diesel Dual Wall Exhaust Tip enhances the look of trucks with a 4″ exhaust tailpipe, including Ford Super Duty Powerstroke, Dodge Ram Cummins, and Chevy Silverado/GMC Sierra Duramax. Made from corrosion-resistant stainless steel for durability, it expands the outlet to 5″ with an angled cut edge. It features a high-quality black finish and a riveted Sinister Diesel logo for a bold appearance.

Sinister Diesel Degas Bottle (SDDEGASLML13) for 2013-2015 Duramax 6.6L

SKU: SDDEGASLML13
$772.58

Upgrade your 2013-15 Duramax 6.6L with Sinister Diesel’s high-strength, all-aluminum coolant reservoir. Made from 6061 aircraft-grade aluminum, TIG welded, and pressure tested, it enhances durability and heat dissipation for better performance and longevity. This direct drop-in replacement requires no modifications and installs in under 30 minutes with basic tools.

Select options This product has options that may be chosen on the product page

Sinister Diesel Coolant Reservoir (Degas) Cap (SDDCDMAX01) for 2001-2016 Duramax 6.6L

SKU: SDDCDMAX01
$113.28

The Sinister Diesel Coolant Reservoir Cap is a factory-style replacement with a custom design. Made from CNC-machined T6-6061 aluminum, it fits OEM and Sinister Diesel reservoirs for 2001-2016 GM Duramax models. It includes an internal pressure relief system for reliability, even if the gasket fails. Available in gray or Sinister Blue, it combines durability with a stylish look.

Sinister Diesel Coolant Filtration System (w/ WIX) (SDCOOLFIL6611W) for 2011-2015 Duramax 6.6L LML

SKU: SDCOOLFIL6611W
$327.59

This Coolant Filter Bypass System extends the life of your diesel engine by removing contaminants like casting sand and metal shavings, protecting the water pump, EGR cooler, and oil cooler. It filters small amounts of coolant while the engine runs. The CNC-machined aluminum filter block mounts using factory holes, requiring no drilling. The kit includes all necessary fittings, and the filter is easy to replace.

Sinister Diesel Coolant Filtration System (SDCOOLFIL6601W) for 2001-2010 Duramax 6.6L LB7 / LLY / LBZ / LMM

SKU: SDCOOLFIL6601W
$298.94

This Coolant Filter Bypass System extends the life of your diesel engine by removing contaminants like casting sand and metal shavings, helping to protect the water pump, EGR cooler, and oil cooler. It bypasses and filters small amounts of coolant while the engine runs. The kit includes a CNC-machined billet aluminum filter block that mounts using factory holes, requiring no drilling. It comes with all necessary fittings, and the filter is easy to replace.