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1978-Up GM Metric Brake Calipers, IMCA Approved

SAME DAY SHIPPING! Most orders ship within 24 hours.

Specs
Centerline of Holes:
5.50
Material Type:
Steel
Color:
Gray
Sold in Quantity:
Each
Finish:
Natural
Inlet fitting:
7/16"-20
Piston Diameter:
2.38
Caliper Pistons:
Single
MFG. Part #:
-
Garage Sale:
No
1978-Up GM Metric Brake Calipers, IMCA Approved
1978-Up GM Metric Brake Calipers, IMCA Approved

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1978-Up GM Metric Brake Calipers, IMCA Approved

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What's in the Box

These stock replacement single piston Metric calipers were standard equipment on 1978-88 GM mid-size cars (Cutlass, Grand Prix, Regals, Monte Carlo, etc.). They feature a 2.38" single piston, shielded bottom inlet, and will save 3-1/2 lbs. per side compared to mid-size 1969-1977 caliper.

 

  • IMCA approved
  • No core charge required
  • 7/16"-20 inlet
  • Can be used with brake hoses from Pre-1978 GM intermediate cars
  • Brake pads & bolts sold separately

 

Note: Does NOT include brake pads or slider bolts and bushings.

Item Details

7/16"-20 Inlet
5 1/2" mount spacing

You may also be interested in:

GM Caliper Slider Bolt
                        The overall length of these slide bolts is 4-3/8".  The underhead length is 3-3/8".  The thread on the bolts is 7/16-20 (US fine). 
                    
DOT Braided Stainless Brake Hoses, 1978-88 GM, 10mm-1.5
                        

DOT approved brake line kits include two stainless steel -3 AN brake lines with the banjo fitting installed, banjo bolts and washers, 3/8"-24 IFF frame adapter fittings and frame tabs with clips. Includes -3 AN fittings and adapters to connect them to 3/16" brake line using a 3/8"-24 IFM flare nut.

  • Stainless steel braid over Teflon® hose
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  • Reduces brake fade
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1978-88 Replacement GM Midsize Metric Calipers
                        

These stock replacement single piston metric calipers were standard equipment on 1978-88 GM midsize cars (Cutlass, Grand Prix, Regals, Monte Carlo, etc.). They feature a 2.38" single piston, shielded bottom inlet, and will save 3-1/2 lbs. per side compared to midsize 1969-1977 caliper.

  • No core charge required
  • 10mm x 1.50 inlet 
  • Speedway 156 pads and slider bolts included

 

Wilwood 120-6426 1978-Up GM3 Metric Aluminum Caliper
                        Aluminum caliper is completely interchangeable with stock GM caliper (racing only).
One stainless piston, 11" to 13" diameter, .810" thick rotors. 3.7 lbs. 5.5" mount center.

1/8" NPT brake line inlet.

Metric caliper is 1978 and newer style.

Wilwood Data Sheet

Emergency Brake Calipers
                        These 1978-up GM Metric calipers accept either GM or Lokar type emergency brake cables. The fluid inlets are tapped to accept 7/16-20 banjo fittings. Includes the bracket to attach the emergency brake cable, slider bolts, and brake pads. 

The bleeder hole is 10mm x 1.5. If speed bleeders are needed, use our part number 6173958. Mount bolt spacing is 5.45".

910-31046 Instructions (PDF)

Rubber Front Brake Lines & Fitting Kit, 7/16-20
                        

Stop guessing which banjo fittings go with which brake lines. With this kit you get two rubber front brake lines, two banjo bolts with seals, and a pair of easy-to-install brake line tabs and clips.

  • 18" lines including fittings
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Lines are 18" in length. Features 3/8"-24 IFF at the chassis fitting to accept 3/16" brake line.

Banjo Brake Fitting Kit, 7/16-20 to -3 AN
                        One part number gets you all the parts needed to hook a -3 AN style line to a GM caliper. Each kit includes 2 banjo bolts, 2 banjo fittings, and 5 washers. Each kit services 2 calipers.
                    
Banjo Brake Fitting Kit, 7/16-20 to -4 AN
                        One part number gets you all the parts needed to hook a -4 AN style line to a GM caliper. Each kit includes 2 banjo bolts, 2 banjo fittings, and 5 washers. Each kit services 2 calipers.
                    
Speed Bleeder Bleed Screws, 10mm-1.5
                        

The Speed Bleeder is a direct replacement for the bleeder assembly in your caliper. This makes brake bleeding truly a one-man operation. Simply "crack" the bleeder loose, pump the brakes, then close the bleeder. 

Sold in pairs.

Read more about bleeding brakes in our tech article, How To Bleed Your Brake Lines.