Sinister MFG
Sinister Diesel Engine Cover (SDENGCOV73) for 1999.5-2003 Powerstroke 7.3L
The Sinister Diesel engine cover for the 7.3L Powerstroke will help dress up the under-hood of your Superduty. This will replace your old, weathered and cracked stock engine cover, or for most, go in place of your missing cover.
Sinister Diesel New EGR Valve (SDEGRVFORD08) for 2008-2010 Powerstroke 6.4L
The EGR valve recirculates exhaust gases to lower combustion temperatures and reduce nitrogen oxide emissions. A faulty valve can trigger the check engine light and increase emissions. This replacement valve meets or exceeds OE performance standards.
Sinister Diesel New EGR Valve (SDEGRVFORD05) for 2005-2007 Powerstroke 6.0L
The 6.0 Powerstroke EGR valve is prone to clogging, causing drivability issues, failed emissions tests, and a check engine light. Modified engines are more susceptible due to increased exhaust soot. A stuck closed EGR valve can lead to over-boost, while a stuck open valve causes rough idle, power loss, and excessive black soot.
Sinister Diesel New EGR Valve (SDEGRVFORD03) for 2003-2004 Powerstroke 6.0L
The 6.0 Powerstroke EGR valve is prone to clogging, leading to drivability issues, failed emissions tests, and a check engine light. Modified engines are at higher risk due to increased exhaust soot. A stuck-closed EGR valve can cause over-boost, while a stuck-open valve results in rough idling, power loss, and excessive soot.
SINISTER DIESEL EGR COOLER W/INSTALL KIT (SDEGRC6004IK) FOR 2004-2007 POWERSTROKE 6.0L
Sinister Diesel has redesigned the EGR cooler for the 6.0L Powerstroke to provide better reliability and prevent common failures seen in the stock Ford unit. Factory EGR coolers can crack, allowing coolant into the intake manifold, which can lead to costly engine damage. This upgraded EGR cooler features high-flow stainless steel tubing with TIG welds for durability, eliminating issues like clogs and leaks.
SINISTER DIESEL EGR COOLER W/INSTALL KIT (SDEGRC6003IK) FOR 2003 POWERSTROKE 6.0L
Sinister Manufacturing and Sinister Diesel have designed an upgraded EGR cooler for the 2003 Ford Powerstroke 6.0L engine (F-250/F-350 or Excursion). It looks and fits like the factory model but features a less-restrictive design with high-flow stainless steel tubing to reduce clogging and improve durability. Made with high-quality TIG welds, it is pressure-tested to prevent leaks. Installation is easy and fast, as it doesn’t require removing the intake manifold.
Sinister Diesel EGR Cooler (SDEGRC6003) for 2003 Powerstroke 6.0L
Sinister Manufacturing and Sinister Diesel have created an upgraded EGR cooler for the 2003 Ford Powerstroke 6.0L engine in the F-250, F-350, and Excursion. It maintains the factory fit but features a less-restrictive design with high-flow stainless steel tubing to reduce clogging and improve durability. Made with high-quality TIG welds, each unit is pressure tested to prevent leaks. Installation is easy and fast, as it fits like the stock model without requiring intake manifold removal.
Sinister Diesel Engine Cover Mounting Bracket (SDECMB73) for 1999-2003 Powerstroke 7.3L
We know how hard it can be finding an engine cover mounting bracket for your 1999-2003 7.3L Powerstroke, so we decided to make our own! It meets or exceeds OEM specifications.
Sinister Diesel Steering Box Support (SDDSBS940120) for 1994-2002 Cummins 5.9L
The Sinister Diesel Cummins Steering Box Brace reduces wobble and play in the steering of 1994-2002 Cummins-powered Dodge 2500/3500 4×4 trucks. The kit includes all necessary hardware for installation, which takes about an hour.
Sinister Diesel Steering Box Support (SDDSBS130120) for 2013-2020 Cummins 6.7L
The Sinister Diesel Cummins Steering Box Brace reduces steering wobble in Cummins-powered Dodge trucks. It includes all necessary hardware for an easy installation in about an hour and fits 2013-2024 Dodge 2500/3500 4×4 models.
Sinister Diesel Steering Box Support (SDDSBS100120) for 2010-2012 Cummins 6.7L
The Sinister Diesel Cummins Steering Box Brace reduces steering wobble in 2010-2012 Cummins-powered Dodge 2500/3500 4×4 trucks. It includes all necessary hardware for installation, which takes about an hour.
Sinister Diesel Steering Box Support (SDDSBS030120) for Cummins 2003-2009 5.9L / 6.7L
The Sinister Diesel Cummins Steering Box Brace reduces wobble and play in the steering of 2003-2009 Cummins-powered Dodge 2500/3500 4×4 trucks. It includes all necessary hardware for installation, which takes about an hour.
Sinister Diesel Steering Box Support (SDDODGESBS9402) for 1994-2002 Cummins 5.9L
The Sinister Diesel Steering Box Support is designed for 1994–2002 Dodge Cummins 4×4 trucks to improve steering precision and performance by eliminating steering box flex. Made from high-strength materials for durability, it reinforces the steering box mounting area to reduce movement under load, enhancing stability and control. It installs easily as a direct bolt-on replacement with no modifications required.
Sinister Diesel Steering Box Support (SDDODGESBS13) for 2013-2024 Cummins 6.7L
The Sinister Diesel Cummins Steering Box Brace reduces steering wobble in Cummins-powered Dodge trucks. It includes all necessary hardware for an easy installation in about an hour and fits 2013+ Dodge 2500/3500 4×4 models.
Sinister Diesel Steering Box Support (SDDODGESBS1012) for 2010-2012 Cummins 6.7L
The Sinister Diesel Steering Box Support is designed for 2010–2012 Dodge Cummins 4×4 trucks to reduce steering box flex and improve steering precision and performance. Made from high-strength materials, it reinforces the steering box mounting area, enhancing stability and control. It features a direct bolt-on design for easy, modification-free installation.
Sinister Diesel Steering Box Support (SDDODGESBS0309) for 2003-2009 Cummins 5.9L / 6.7L
The Sinister Diesel Steering Box Support is designed for 2010–2012 Dodge Cummins 4×4 trucks to reduce steering box flex and improve steering precision and performance. Made from high-strength materials, it reinforces the steering box mounting area, enhancing stability and control. It features a direct bolt-on design for easy, modification-free installation.
Sinister Diesel Degas Bottle (SDDEGASLML13) for 2013-2015 Duramax 6.6L
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.
Sinister Diesel Coolant Reservoir (Degas) (SDDEGAS73) for 1999.5-2003 Powerstroke 7.3L
Upgrade your cracked or leaky factory coolant reservoir with Sinister Diesel’s high-strength, all-aluminum coolant reservoir for 1999.5–2003 Powerstroke 7.3L engines. Made from durable 6061 aircraft-grade aluminum, it’s TIG welded, pressure tested, and designed to improve cooling system performance and longevity. This direct drop-in replacement requires no modifications and installs easily in under 30 minutes with basic tools. It features a sight glass for easy coolant checks and comes with all necessary hardware.
Sinister Diesel Coolant Reservoir (Degas) (SDDEGAS67P20) for 2017-2021 Powerstroke 6.7L
Upgrade your cracked or leaky factory coolant reservoir with Sinister Diesel’s high-strength, all-aluminum coolant reservoir for 1999.5–2003 Powerstroke 7.3L engines. Made from durable 6061 aircraft-grade aluminum, it’s TIG welded, pressure tested, and designed to improve cooling system performance and longevity. This direct drop-in replacement requires no modifications and installs easily in under 30 minutes with basic tools. It features a sight glass for easy coolant checks and comes with all necessary hardware.
Sinister Diesel Degas Bottle (SDDEGAS64) for 2008-2010 Powerstroke 6.4L
Sinister Diesel’s new Coolant Reservoir is made from durable 6061 aircraft-grade aluminum, TIG welded, and pressure tested for strength. Unlike factory plastic tanks that can crack and leak, this aluminum design improves durability and heat dissipation, enhancing performance and longevity. It uses the factory cap (with upgrade options) and includes a sight glass for easy level checks.
Sinister Diesel Degas Bottle Cap (SDDCFORD94) for 1994-2016 Powerstroke 6.0L / 6.4L / 6.7L / 7.3L
The Sinister Diesel Coolant Reservoir (Degas) Cap is a high-quality aftermarket upgrade for 1994-2016 Powerstroke engines. It provides a superior seal over stock caps, maintaining optimal system pressure for efficient cooling performance. Rigorously tested to meet or exceed industry standards, it reflects Sinister Diesel’s commitment to quality and features their signature blue finish.
Sinister Diesel Coolant Reservoir (Degas) Cap (SDDCDMAX01) for 2001-2016 Duramax 6.6L
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 Degas Bottle Cap (SDDC67P17) for 2017-2019 Powerstroke 6.7L
The Sinister Diesel Coolant Reservoir Cap fits 2017-2019 Powerstroke engines and offers a custom design while functioning like a factory cap. Made from CNC-machined T6-6061 billet aluminum, it includes an interior pressure relief system for reliability. Available in gray or Sinister Blue, it combines durability with a stylish look.
Sinister Diesel Complete Solution Kit (SDCS60SCBLUE20) for 2003-2007 Powerstroke 6.0L w/20mm Head Gaskets
The Sinister Diesel Complete Solution® Kit is designed to enhance the performance and reliability of the 6.0 Powerstroke engine by preventing common issues like blown head gaskets and EGR cooler failures. The kit includes an upgraded EGR cooler with superior cooling capacity, a heavy-duty oil cooler for better engine oil cooling, and ARP Head Studs to prevent head gasket failures.
