Bolt-On Bung & Cap Assembly

Image Part Number Description Price Unit
C73-712 C73-712
2-3/4 in. SILVER ALUMINUM 6 BOLT FUEL CELL BUNG 2-1/4-10 Straight Thread
3/4 in. Bung Height
6 on 4.438 in. Dia. Bolt Circle

Incls. mount hdw. and Buna gasket
Fits 2-3/4 in. Easy Turn Fill Cap

Made in the USA See Product Details
$64.99 Each
C73-735-B C73-735-B
1-5/8 in. BLACK FILL CAP WITH ALUMINUM BOLT-ON BUNG 1-1/4-12 Straight Thread
4 on 2 in. Dia. Bolt Circle
9/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-749 & Bung Replacement O-Ring is C73-748) See Product Details
$82.99 Each
C73-736-B C73-736-B
1-5/8 in. RED FILL CAP WITH ALUMINUM BOLT-ON BUNG 1-1/4-12 Straight Thread
4 on 2 in. Dia. Bolt Circle
9/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-749 & Bung Replacement O-Ring is C73-748) See Product Details
$82.99 Each
C73-737-B C73-737-B
1-5/8 in. BLUE FILL CAP WITH ALUMINUM BOLT-ON BUNG 1-1/4-12 Straight Thread
4 on 2 in. Dia. Bolt Circle
9/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-749 & Bung Replacement O-Ring is C73-748) See Product Details
$82.99 Each
C73-739-B C73-739-B
1-5/8 in. POLISHED FILL CAP WITH ALUMINUM BOLT-ON BUNG 1-1/4-12 Straight Thread
4 on 2 in. Dia. Bolt Circle
9/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-749 & Bung Replacement O-Ring is C73-748) See Product Details
$82.99 Each
C73-755-B C73-755-B
2 in. BLACK FILL CAP WITH ALUMINUM BOLT-ON BUNG 1-1/2-12 Straight Thread
4 on 2.25 in. Dia. Bolt Circle
9/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-769 & Bung Replacement O-Ring is C73-768) See Product Details
$87.99 Each
C73-756-B C73-756-B
2 in. RED FILL CAP WITH ALUMINUM BOLT-ON BUNG 1-1/2-12 Straight Thread
4 on 2.25 in. Dia. Bolt Circle
9/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-769 & Bung Replacement O-Ring is C73-768) See Product Details
$87.99 Each
C73-757-B C73-757-B
2 in. BLUE FILL CAP WITH ALUMINUM BOLT-ON BUNG 1-1/2-12 Straight Thread
4 on 2.25 in. Dia. Bolt Circle
9/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-769 & Bung Replacement O-Ring is C73-768) See Product Details
$87.99 Each
C73-759-B C73-759-B
2 in. POLISHED FILL CAP WITH ALUMINUM BOLT-ON BUNG 1-1/2-12 Straight Thread
4 on 2.25 in. Dia. Bolt Circle
9/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-769 & Bung Replacement O-Ring is C73-768) See Product Details
$87.99 Each
C73-775-B C73-775-B
2-3/4 in. BLACK FILL CAP WITH ALUMINUM BOLT-ON BUNG 2-1/4-10 Straight Thread
5 on 3.125 in. Dia. Bolt Circle
11/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-788-A & Bung Replacement O-Ring is C73-789) See Product Details
$95.99 Each
C73-776-B C73-776-B
2-3/4 in. RED FILL CAP WITH ALUMINUM BOLT-ON BUNG 2-1/4-10 Straight Thread
5 on 3.125 in. Dia. Bolt Circle
11/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-788-A & Bung Replacement O-Ring is C73-789) See Product Details
$95.99 Each
C73-777-B C73-777-B
2-3/4 in. BLUE FILL CAP WITH ALUMINUM BOLT-ON BUNG 2-1/4-10 Straight Thread
5 on 3.125 in. Dia. Bolt Circle
11/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-788-A & Bung Replacement O-Ring is C73-789) See Product Details
$95.99 Each
C73-779-B C73-779-B
2-3/4 in. POLISHED FILL CAP WITH ALUMINUM BOLT-ON BUNG 2-1/4-10 Straight Thread
5 on 3.125 in. Dia. Bolt Circle
11/16 in. Bung Height

Includes mounting hardware and Buna O-rings.

Made in the USA

(Cap Replacement O-Ring is C73-788-A & Bung Replacement O-Ring is C73-789) See Product Details
$95.99 Each

EASY TURN FILL CAP

  The Pro-werks Bolt on fill assembly requires no welding, this delivers a very clean finished look and a leak proof installation. Ideal for installing on composites when welding isn't an option or for thinner gauge materials that are either to fragile to weld, or already have a protective finish. These are a favorite for engine builders looking to add a filling point into a valve cover.

  The lightweight, non-vented Easy Turn fill cap features positive grip finger notches that is easy to get a hold of .  The 6061-T6 billet aluminum cap is CNC machined for accuracy with a lightweight, attractive design and it features quick-starting coarse threads. It comes standard with a positive sealing radial squeeze o-ring , which also holds the cap secure.

  Easy Turn Fill Caps are available in variety of sizes to fit most any application, big or small. To compliment the color coordination of your project, the caps are finished off in Pro-Werks Brilliance anodized colors in your choice of  black, red, blue, silver, or beautifully Micro-polished aluminum.

  Proudly made in the USA.

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