ARP Parts and Accessories

LOCK NUT

Part Number: ARP-400-8210

Not Yet Reviewed

Estimated Ship Date: Apr 14, 2026 if ordered today

• Special Order

Special Purpose Washer, Black Oxide, 9/16" ID - 1" OD, .120 Thickness, Each

Part Number: ARP-200-8515

Not Yet Reviewed

Estimated Ship Date: Today

Bolts, 12-Point Head, Chromoly Steel, Black Oxide, 1/4 in.-28 RH Thread, 0.515 in. UHL, Set of 5

Part Number: ARP-740-0515

Not Yet Reviewed

Estimated Ship Date: Apr 20, 2026 if ordered today

• Special Order

Nut, Hex, Stainless Steel, Polished, 5/16-24 in. Thread, Each

Part Number: ARP-400-8614

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Nuts, 12-point, Stainless Steel, Polished, 1/4-28 in. RH Thread, Pair

Part Number: ARP-400-8320

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Washer, Flat, Chromoly, Black Oxide, .472 in. I.D., 0.995 in. O.D., .120 in. Thick, Each

Part Number: ARP-200-8752

Not Yet Reviewed

Estimated Ship Date: Today

Air Cleaner Stud/Nut, Stainless Steel, 1/4 in.-20 Thread, 2.225 in. Length, Each

Part Number: ARP-400-0304

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Nuts, 12-Point, Steel, Black Oxide, 1/2 in.-13 RH Thread, Pair

Part Number: ARP-301-8322

Not Yet Reviewed

Estimated Ship Date: Today

Nut, 12-point, Stainless Steel, Polished, 7/16-14 in. Thread, Each

Part Number: ARP-401-8306

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Washers, Chromoly, Black Oxide, .500 in. I.D., 1.300 in. O.D., .120 in. Thick, Pair

Part Number: ARP-200-8722

5.0 out of 5 stars ( 1 )

Air Cleaner Stud/Nut, Steel, Black Oxide, 1/4 in.-20 Thread, 2.225 in. Length, Each

Part Number: ARP-200-0304

Not Yet Reviewed

Estimated Ship Date: Today

Nuts, Hex Head, Stainless Steel, Polished, 5/16 in.-24 RH Thread, Set of 5

Part Number: ARP-400-8752

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Mar 30, 2026 if ordered today

• Special Order

Air Cleaner Stud/Nut, Steel, Black Oxide, 5/16 in.-18 Thread, 3.2 in. Length, Each

Part Number: ARP-200-0303

5.0 out of 5 stars ( 3 )

Estimated Ship Date: Today

Washer, Flat, Chromoly, Black Oxide, .375 in. I.D., .750 in. O.D., Each

Part Number: ARP-200-8517

Not Yet Reviewed

Estimated Ship Date: Today

Nut, 12-Point, Reduced Wrenching, Self Locking, Carbon Steel, Cadmium/Chromate, M10 x 1.25 Thread, Each

Part Number: ARP-200-8207

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Cam Bolt, Pro Series, 3/8 in.-16, 1.970 in. UHL, Ford, 351C, 351M, 400, Each

Part Number: ARP-254-1002

5.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Nuts, Stainless Steel, Polished, 12-Point, 1/4 in.-20 RH, Each

Part Number: ARP-401-8300

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Washer, Flat, Hardened, Chromoly, Black Oxide, 0.438 in. i.d., 0.995 in. o.d., 0.120 in. Thick, Each

Part Number: ARP-200-8708

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Nuts, Hex, 180,000 psi Yield Strength, Flanged, Steel, Black Oxide, 3/8-16 in. Thread Size, Pair

Part Number: ARP-200-8724

Not Yet Reviewed

Estimated Ship Date: Today

Nut, Hex, Custom 450, Black Oxide, 7/16 in.-20 RH Thread, Each

Part Number: ARP-200-8605

Not Yet Reviewed

Estimated Ship Date: Today

Nuts, Hex Head, Stainless Steel, Polished, 3/8 in.-24 RH Thread, Set of 5

Part Number: ARP-400-8754

Not Yet Reviewed

Estimated Ship Date: Today

Special Purpose Washer, Black Oxide, 3/8" ID - 3/4" OD, .120 Thickness, Pair

Part Number: ARP-200-8547

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Thermostat Housing Bolts, Stainless Steel, Polished, Hex, Chevy, Small Block, LS1/LS2/LS6/L76, Kit

Part Number: ARP-434-7402

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

Nut, Hex, Custom 450, Black Oxide, 1/2 in.-20 RH Thread, Each

Part Number: ARP-200-8607

1.0 out of 5 stars ( 2 )

Estimated Ship Date: Today

Thermostat Housing Bolts, Stainless Steel, Hex, Ford, FE, Set

Part Number: ARP-455-7402

Not Yet Reviewed

Estimated Ship Date: Apr 22, 2026 if ordered today

• Special Order