1978-Up GM Metric Brake Calipers, IMCA Approved
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Q & A
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 Details7/16"-20 Inlet
5 1/2" mount spacing
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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 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
- Reduces volumetric expansion of brake lines
- Reduces brake fade
- Less susceptible to debris than rubber line
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
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.
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)
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
- 3/8"-24 IFF and 7/16"-20
Lines are 18" in length. Features 3/8"-24 IFF at the chassis fitting to accept 3/16" brake line.
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.
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.
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.