1 3

aFe Oil Fill Caps 79-12006

aFe Oil Fill Caps 79-12006

$81.75
$81.75
Sale Sold out

The aFe Oil Fill Caps 79-12006 is a CNC-machined billet aluminum oil fill cap designed to replace factory plastic caps with a precision-machined, leak-proof alternative. In addition to providing a secure seal, this cap adds a clean, custom appearance to your valve covers.

Constructed from 6061-T6 billet aluminum with a durable matte black or anodized finish, this cap features an integrated O-ring gasket for a positive seal that prevents oil vapor leaks. The knurled outer surface provides a secure grip even with oily hands or gloves. The cap is designed to fit standard oil fill tubes on most Chevrolet, Ford, and Mopar valve covers and timing covers. The billet construction will not crack or degrade like plastic caps exposed to heat and oil vapor over time. The precise threading ensures a snug fit without cross-threading or binding.

A quality oil fill cap with a fresh O-ring prevents oil vapor leaks that can create messes in your engine bay and attract dirt. This may seem like a small detail, but in a clean engine build, every component matters. The billet aluminum construction matches other dress-up components like breathers, valve covers, and air cleaners for a cohesive look under the hood. Installation is as simple as removing the old cap and threading this one into place. The cap is compatible with standard and aftermarket valve covers with conventional oil fill tubes.

Add the aFe Oil Fill Caps 79-12006 to your dress-up kit for a clean, functional upgrade.
View full details

Frequently Asked Questions

What kind of engine component does Atech Motorsports offer for my engine build?

aFe Oil Fill Caps from Atech Motorsports delivers reliable performance for street and strip applications. Precision-machined from premium-grade materials, it ensures consistent tolerances within 0.001 inch for optimal engine alignment. This engine component supports RPM ranges from idle up to 6,500 and is compatible with most small and big block platforms. Always verify your specific engine bore and stroke before ordering to guarantee proper fitment.

How does this engine component improve performance in a high-mileage engine?

Installing aFe Oil Fill Caps reduces internal friction and restores factory clearances in worn engine builds. The precision-ground surfaces maintain oil control across a 20 to 60 PSI operating range at normal operating temperatures. For high-mileage engines, this engine component can recover up to 5 to 8 percent lost horsepower by stabilizing rotating assembly tolerances. Pair it with a quality oil pump and fresh gaskets for best results at 180 to 210 degrees Fahrenheit.

Can I install this engine component with basic hand tools in my garage?

Installing aFe Oil Fill Caps is achievable with standard tools, though precise torque specs and a service manual are essential. You will need a beam-style torque wrench accurate to within 2 foot-pounds, along with assembly lube rated for break-in periods up to 30 minutes at 2,000 RPM. This engine component requires no special machining or line-boring in most applications. Allow 3 to 5 hours for a complete installation on a standard V8 engine platform.

Does this engine component work with aftermarket cylinder heads and intake manifolds?

aFe Oil Fill Caps is engineered to interface seamlessly with most aftermarket cylinder heads and intake manifolds from brands like Edelbrock, AFR, and Dart. It accommodates valve lift up to 0.600 inches and spring pressures from 110 to 150 pounds on the seat. This engine component maintains proper geometry with stud-mounted rocker arms and guide plates up to 3/8-inch diameter. Confirm your pushrod length if using fully ported cylinder heads with deck resurfacing.

What maintenance schedule does this engine component require under daily driving?

Under normal daily driving, this engine component requires inspection every 12,000 miles with the first check at 500 miles after initial installation. The hardened steel surfaces resist wear through 150,000 miles of standard operation when paired with conventional 10W-30 oil at 40 to 60 PSI. Retorque all fasteners to factory specifications at the first oil change interval. Avoid extended periods above 6,500 RPM to maximize service life beyond 100,000 miles.

Will this engine component add horsepower to a naturally aspirated small block?

Yes, this engine component can contribute 5 to 15 horsepower to a naturally aspirated 350 cubic inch small block depending on supporting modifications. The optimized design reduces parasitic drag by up to 8 percent compared to stock components at peak torque around 4,000 RPM. It works best when combined with a matched camshaft profile offering 0.480 to 0.520 inches of lift and 270 to 290 degrees of advertised duration. Expect the most gain in the 2,500 to 5,500 RPM power band where most street engines live.