Valve Covers and Accessories - Oil Fill Caps

Chrome Twist-in Oil Cap

These chrome plated oil caps use two tabs to register into valve covers equipped with two slots. These caps twist-in to provide a secure seal.

Filler Cap Kit, Universal, Non-Weld, 1-1/4" - UNF Threads, 1.5" O.D.

Valve Cover Oil Fill Kit
• 1.25" Inside Diameter
• 1.5" Outside Diameter
• -12UNF Threads
• Finger Grip Cap
• 6061-T6 Billet Aluminum With O-Ring
• Black Anodized Finish Cap With Moroso Logo
• Non-Weld

These late model valve cover fill caps screw into the valve cover like an ordinary cap. These caps feature a baffle & -10 ORB (7/8"-14 Straight Thread O-Ring Style Port) for use w/ AN O-Ring Fitting (or Port hose end) & AN hose to the catch tank or PCV. These caps eliminate the need to modify your valve covers when adding a catch tank to your racing engine (required by most sanctioning bodies in racing applications). Billet aluminum construction w/ black anodized finish. Use w/ ORB (O-Ring Port) hose end, or O-ring Port to AN Flare Adapter (90 Degree) & AN hose to the Catch Tank.

• Easy Way to Add Catch Tank to Racing Engine w/o Modifying the Valve Cover
• Screws Into Valve Cover Like an Oil Fill Cap
• -10 ORB (7/8"-14 Straight Thread) O-Ring Boss Port for Use w/ AN Hose to Catch Tank or PCV
• Use w/ O-Ring Port Hose End, or O-Ring Adapter
• Internal Baffle Inside Cap – Helps to Reduce Transfer of Oil to Catch Tank
• Billet Aluminum Construction w/ Black Anodized Finish
• Fits Holley Cast Aluminum Valve Covers for the GM LS Series Engines w/ 1-5/16"-12 Threads on the Cap

2-Piece Valve Cover Accessories - Filler Cap (2 Required)

• The caps and extensions are CNC machined from billet aluminum and both seal with an O-ring.
• Thread size -16 AN.
• O-Ring Seal

Replacement O-Ring, -16 AN for Oil Fill Cap 620-154023

Push-In Chrome Oil Fill Plug

Push-in design for all applications requiring a sealing type filler plug. Chrome plated top section. Fits most aftermarket and OEM valve covers with a 1.22" diameter hole.

Billet Aluminum Bolt On Oil Cap, Polished (Fasteners Not Included)b>

These beautiful billet caps are great for many applications. Billet aluminum oil caps are designed to be bolted-in, have a positive O-ring seal and are -16 AN thread. 1-1/4" Inside Diameter. 1-1/2" Outside Diameter. 2" O.D. Base Diameter. 1-3/4" Cap Diameter

Oil Filler Plug

These oil resistant rubber oil fill plugs are used to seal oil fill holes in valve covers.  This cap measures 1.22 in diameter.