iFJF Fuel Filter Housing Cap for Duramax 6.6L L5P — Red Billet Aluminium with Stainless Drain Plug

iFJF 134001 is a CNC-machined replacement fuel filter housing cap designed to fit GM Duramax 6.6L L5P engines and select Cruze models, offering improved strength and a stainless steel drain plug for reliable draining.

This red billet aluminum housing cap is built to match the original fitment while upgrading durability and corrosion resistance. Machined from 6061-T6 aluminum, the cap resists cracking during installation and removal, and the included stainless steel drain plug stands up to rust better than standard aluminum screws. It replaces OE part number 134001 for many 2017–2020 Duramax-powered trucks and certain Cruze engines.

Will this housing cap fit my Duramax 6.6L L5P truck?

Yes — the iFJF 134001 cap is engineered to match the factory dimensions and mounting points for GM Duramax 6.6L L5P applications listed by the manufacturer. It’s intended as a direct replacement so you can swap it in without modifying surrounding components.

• Compatible with 2017–2020 Chevy Silverado / GMC Sierra 2500HD and 3500HD L5P models.
• Also fits select Cruze models: 2014–2015 2.0L and 2017–2019 1.6L where OE 134001 applies.
• Designed to accept the original sealing O-ring (O-ring not included in package).
• Precision-machined to match factory threads and torque characteristics.

How does the stainless steel drain plug improve performance?

The upgraded drain plug resists corrosion far better than common aluminum fasteners, reducing the chance of seizing or thread damage during service. That makes fuel draining smoother and lowers the risk of stripped threads or snap-offs over repeated maintenance cycles.

• 304-grade stainless (or equivalent) resists rust and corrosion in wet environments.
• Easier to remove during routine filter changes and maintenance.
• Comes with a lifetime warranty for the drain screw accessory, per manufacturer.
• Reduces long-term replacement costs compared with aluminum plugs.

What materials and construction set this replacement apart from the OEM cap?

The cap is CNC-machined from 6061-T6 billet aluminum, a stronger and more fatigue-resistant alloy than many factory cast or stamped caps. The precision machining ensures consistent fitment, while the anodized red finish helps prevent surface corrosion and adds visual appeal under the hood.

• 6061-T6 billet aluminum construction for higher strength and durability.
• Precision CNC machining for accurate thread and sealing surfaces.
• Anodized finish improves surface hardness and resists oxidation.
• Quality-tested for fit before shipment to reduce installation surprises.

What comes in the package and do I need extra parts to install it?

The shipment includes one iFJF fuel filter housing cap and one stainless steel drain plug. An O-ring is not included, so you should reuse your existing O-ring if it's in good condition or purchase the correct OE-sized O-ring separately before installation.

• Included: 1 x fuel filter housing cap (red), 1 x stainless steel drain plug.
• Not included: O-ring — reuse OEM unit or buy a replacement to ensure a leak-free seal.
• Designed for bolt-on installation using factory hardware and torque specs.
• Each cap is inspected to meet fitment standards prior to shipping.

Who this is for: Mechanics, fleet managers, and Duramax owners who want a stronger, longer-lasting replacement for the fuel filter housing cap will value this upgrade. If you perform regular filter service, work in corrosive environments, or want to avoid repeated replacements from cracked or corroded caps, the iFJF 134001 offers a durable, service-friendly solution that keeps your vehicle maintenance straightforward.