Dorman 700-257BX Bumper Impact Absorber Bracket Bolt - Front

Brand Dorman 700-257BX
Bolt Grade 9.8
Callout Size M8-1.25 X 30 mm
Color Black
Friction Material Thickness Phosphate
Head Drive Type Hex
Head Tool Size 13
Heat Hardened Yes
Length 30 mm
Material Steel
Package Contents 10 Bolts
Partial Thread No
SAE or Metric Metric
Thread Diameter 8
Thread Length 25.4
Thread Pitch 1.25
Thread Type Coarse
Threads Per Inch 1.25
Type Body Bolt
Washer Attached Yes
Fits Oldsmobile and Chevrolet · 21 vehicles

Corrosion-tested strength. Built from steel with a phosphate finish for lasting durability.

Heat-hardened construction. Helps deliver the strength needed for secure fastening.

Integrated washer. Simplifies installation with a ready-to-use body bolt design.

Cross-references 11501188 for the same application. See all 1.

$25.73Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Bumper Impact Absorber Bracket Bolts are typically replaced in pairs, axle by axle.
Order total $25.73
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.

Dorman 700-257BX Bumper Bracket Bolts

Dorman 700-257BX bumper impact absorber bracket bolts are built for front bumper energy absorber bracket service on select GM vehicles. These metric body bolts use durable steel construction, a black phosphate finish, and corrosion-tested materials to support strength and long-term service life.

Key Features

  • Steel body bolt with black phosphate finish
  • Metric M8-1.25 x 30 mm callout size
  • Hex head with 13 mm tool size
  • Grade 9.8 bolt with heat-hardened construction
  • Washer attached for secure fastening
  • Coarse thread, 1.25 thread pitch
  • Body hardware for front bumper impact absorber bracket applications

Product Details

This Dorman bumper impact absorber bracket bolt is a direct-fit body fastener for front bumper energy absorber bracket service on applications such as the Chevrolet Celebrity, Oldsmobile Cutlass Supreme, Oldsmobile Cutlass Cruiser, and Oldsmobile Cutlass Salon. The M8 x 1.25 thread specification, 30 mm length, and hex-drive head make it a practical replacement when restoring bumper mounting hardware on these vehicles. Part number 700-257BX is also referenced as an OE-style replacement for the same application.

Common Uses

  • Replacing corroded or damaged front bumper bracket bolts
  • Restoring secure attachment at the energy absorber bracket
  • Addressing stripped or weakened body fasteners
  • Repairing bumper hardware after front-end service
  • Matching metric bumper bolt specifications on select GM models

Installation Notes

Verify thread size, pitch, length, and head tool size before installation. Use the correct 13 mm hex tool and confirm the fastener seats properly against the bracket and body mounting surface. For best results, compare the original bolt specification to the vehicle service information before tightening.

Quality Assurance

Dorman manufactures these bolts using durable materials and corrosion-tested construction to help maintain required strength and longevity in body hardware applications. Part number 700-257BX is built for consistent fitment on confirmed front bumper and energy absorber bracket applications.

This part fits 21 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody Type# DoorsPositionNotes
1987OldsmobileCutlass SalonN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1987OldsmobileCutlass SupremeSedan4 DoorFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1987OldsmobileCutlass SupremeN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1986OldsmobileCutlass SalonN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1986OldsmobileCutlass SupremeSedan4 DoorFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1986OldsmobileCutlass SupremeN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1985ChevroletCelebrityFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1985ChevroletCelebrityN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1985OldsmobileCutlass SalonN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1985OldsmobileCutlass SupremeSedan4 DoorFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1985OldsmobileCutlass SupremeN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1984ChevroletCelebrityFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1984ChevroletCelebrityN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1984OldsmobileCutlass SupremeSedan4 DoorFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1984OldsmobileCutlass SupremeN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1983OldsmobileCutlass CruiserFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1983OldsmobileCutlass SupremeSedan4 DoorFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1983OldsmobileCutlass SupremeN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
1982OldsmobileCutlass CruiserFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1982OldsmobileCutlass SupremeSedan4 DoorFrontM8 x 1.25 Thread; Energy Absorber Bracket; Dorman; Package Quantity: 10; Packaging Type: Box
1982OldsmobileCutlass SupremeN/AFront Bumper; Package Quantity: 10; Packaging Type: Box
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
11501188