Engine Components

Sinister Diesel Intake Resonator Cover Plate for 2011-2016 GM Duramax 6.6L LML (Gray).

It's easy to take a power steering cap for granted until yours is defective. With a faulty cap, you're allowing fluid to leak out or, even worse, allowing contamination into your power steering fluid reservoir. With a Sinister Diesel Power Steering Cap,...

Brakes are easy to overlook in diesel performance until yours aren't working properly. OEM plastic factory brake master cylinder caps are prone to growing brittle and cracking over time. This can lead to losing fluid or allowing moisture in the air to...

This new Sinister Diesel Oil Fill Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits 1999-2010 Powerstroke engines and 2007.5-2019 Dodge/Ram Cummins engines. It is made from CNC machined, solid billet T6-6061...

Sinister Diesel 2017+ Ford Powerstroke Windshield Washer Cap

Sinister Diesel 03-07 Ford Powerstroke 6.0L Windshield Washer Fluid Cap

Sinister Diesel Chevy Duramax L5P Master Cylinder Cap

This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits OEM or Sinister Diesel Coolant Reservoir for the 2001-2016 GM Duramax. It is made from CNC machined, solid billet T6-6061...

Sinister Diesel 20+ Ford Powerstroke 6.7L Coolant Reservoir (Degas) Cap

This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits OEM or Sinister Diesel Coolant Reservoir for the 2013-2019 Dodge Ram 2500 3500 6.7L Cummins. It is made from CNC machined, solid...

This new Coolant Reservoir (Degas) Cap functions like a factory cap, but features custom Sinister Diesel looks. The cap fits OEM or Sinister Diesel Coolant Reservoir for the 2001-2016 GM Duramax. It is made from CNC machined, solid billet T6-6061...

Bikers Choice 06-07 FLHRS W/Cruise Black Vinyl Idle Cable Stock Length

Universal choke cable and knob assemblies are slightly longer than stock to allow for use on custom applications.

Bikers Choice 96-05 Dyna 09-11 FLST Blackout Idle Cable Replaces H-D 56555-96 Stock Length

Bikers Choice 96-11 Softail 07-17 Dyna Blackout Idle Cable +6 35.5 Inch