How often should I change the coolant filter?

Sinister Diesel recommends changing the coolant filter every 12 months or 30,000 miles, whichever comes first. Depending on your operating conditions, you may need to change it more frequently.

Does this kit come with everything I need for installation?

Yes, this Sinister Diesel coolant filter kit includes all the necessary components for a direct fit installation. This includes the filter, filter head, hoses, fittings, and mounting bracket.

What type of coolant is compatible with this filter?

This coolant filter is compatible with most coolants approved for the Duramax L5P engine. Always refer to your vehicle's owner's manual for the correct coolant specification.

Sinister Diesel

Specifications

Brand: Sinister Diesel
Part #: SD-CF-L5P-20
UPC: 841788116374

Sinister Diesel

Sinister Diesel20-21 GM Duramax L5P 6.6L Coolant Filtration System (W/ Wix)

Name: Sinister Diesel20-21 GM Duramax L5P 6.6L Coolant Filtration System (W/ Wix)
Brand: Sinister Diesel
Price: 266.23 USD
Availability: InStock

$266.23

Keep your Duramax diesel running cool and clean. This coolant filter kit removes contaminants that can clog your cooling system.

Key Features

Filters coolant — removes contaminants that can damage your cooling system
Wix filter included — well-built filter known for performance
Extends cooling system life — protects water pump, radiator, and other components
Direct fit — installs without modification

Fits 2020-2021 GM Duramax L5P 6.6L trucks.

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