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Allstar Performance Fill Plug Kits

4.33 out of 5 stars 18 Customer Reviews

Allstar Performance fill plug kits enable you to put a fill plug where you need it. They include an aluminum or steel bung for use as an inspection plug or filler plug, plus an easy-grip cap with an O-ring for a positive seal. The kits are available with a small 1 3/8 in. opening or a large 3 in. diameter opening. These weld-on or bolt-on fill cap kits are available in a variety of styles and finishes.

Results 1 - 20 of 20

Fill Plug Kit, 1-1/2 in.-12 Thread, Billet Aluminum Cap, Weld-In Steel Bung, 1.50 in. Diameter Cap, Kit

Part Number: AAF-ALL36161

5.0 out of 5 stars ( 3 )

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Fill Cap Kit, 1-1/2 in.-12 Thread, Weld-On, Aluminum, 1.375 in. Diameter Opening, Kit

Part Number: AAF-ALL36160

4.67 out of 5 stars ( 6 )

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Fill Cap Kits, Fill Plug Kits, Weld-on, 3.00 in. Cap Diameter, Billet Aluminum, Black Anodized, 3-12 Thread Size, 3.00 in. Diameter Opening, Kit

Part Number: AAF-ALL36175

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Fill Cap Kits, 1-1/2 in.-12 Thread, Weld-on, Steel Bung, Aluminum Cap, Black Anodized, 1 1/2-12 in. Thread Size, Kit

Part Number: AAF-ALL36167

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Fill Cap Kits, Weld-on, Billet Aluminum, Black Anodized, 1 1/2-12 in.Thread Size, Kit

Part Number: AAF-ALL36164

3.67 out of 5 stars ( 3 )

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Fill Cap Kits, Aluminum Bung, Weld-on, 3.000 in. Cap Diameter, 3-12 Cap Thread Size, Sliver Anodized, Kit

Part Number: AAF-ALL36170

3.0 out of 5 stars ( 1 )

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Fill Cap Kits, Fill Plug Kits, Bolt-on, 1.50 in. Cap Diameter, Billet Aluminum, Black Anodized, 1 1/2-12 Thread Size, 1.375 in. Diameter Opening, Kit

Part Number: AAF-ALL36181

5.0 out of 5 stars ( 1 )

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Fill Plug Kit, 3 in. -12, Billet Aluminum Cap, Weld-On, Polished, 3.00 in. Diameter Cap, Kit

Part Number: AAF-ALL36173

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Plug Kit, Billet Aluminum Cap, Bolt-On, Red Anodized, 3.00 in. Cap Diameter, Kit

Part Number: AAF-ALL40133

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Cap Kits, 1-1/2 in.-12 Thread, Weld-on, Billet Aluminum, Polished, 1.500 in. Diameter, Kit

Part Number: AAF-ALL36166

5.0 out of 5 stars ( 1 )

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Fill Plug Kit, 3 in. -12, Billet Aluminum Cap, Weld-On, Silver Anodized, 3.00 in. Diameter Cap, Kit

Part Number: AAF-ALL36174

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Plug Kit, 3 in. -12, Billet Aluminum Cap, Weld-On, Polished, 3.00 in. Diameter Cap, Kit

Part Number: AAF-ALL36177

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Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Cap Kits, 1-1/2 in.-12 Thread, Weld-on, Billet Aluminum, Red Anodized, 1.500 in. Diameter, Kit

Part Number: AAF-ALL36165

1.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Plug Kit, 1 1/2 in. -12, Billet Aluminum Cap, Weld-On, Red Anodized, 1.500 in. Diameter Cap, Kit

Part Number: AAF-ALL36168

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Fill Plug Kit, 1 1/2 in. -12, Billet Aluminum Cap, Bolt-On, Silver Anodized, 1.500 in. Diameter Cap, Kit

Part Number: AAF-ALL36180

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Plug Kit, 1 1/2 in. -12, Billet Aluminum Cap, Weld-On, Polished, 1.500 in. Diameter Cap, Kit

Part Number: AAF-ALL36169

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Plug Kit, Billet Aluminum Cap, Bolt-On, Red Anodized, 3.00 in. Cap Diameter, Kit

Part Number: AAF-ALL40134

Not Yet Reviewed

Estimated Ship Date: Jan 22, 2026 if ordered today

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Estimated Ship Date: Jan 22, 2026 if ordered today

Fill Plug Kit, 1 1/2 in. -12, Billet Aluminum Cap, Bolt-On, Polished, 1.500 in. Diameter Cap, Kit

Part Number: AAF-ALL36183

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Plug Kit, 1 1/2 in. -12, Billet Aluminum Cap, Bolt-On, Red Anodized, 1.500 in. Diameter Cap, Kit

Part Number: AAF-ALL36182

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

Fill Plug Kit, 3 in. -12, Billet Aluminum Cap, Weld-On, Red Anodized, 3.00 in. Diameter Cap, Kit

Part Number: AAF-ALL36176

Not Yet Reviewed

Estimated Ship Date: Jan 21, 2026 if ordered today

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Estimated Ship Date: Jan 21, 2026 if ordered today

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