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PRODUCT DESCRIPTION
Product details
D154 Single & Dual Piston Floating Caliper
Wilwood’s D154 forged caliper is a direct bolt-on, high-strength, severe-duty, lightweight alternative to the OE cast iron calipers that were used on a wide range of mid-size GM cars and small trucks equipped with factory disc brakes beginning in 1978. Usage of this caliper can still be found on some GM models through 2002. The broad availability and affordable pricing of D154 calipers and brake pad compounds also made it a popular choice in several restricted class racing categories and drum-to-disc conversions on all types of hot rods and street machines.
Three piston configurations are available for the D154: a large 2.50” single piston, and two dual piston models with either 1.62/1.62” or 1.12/1.12” pistons. All three calipers use stainless steel pistons. Stainless steel pistons are used to resist corrosion and retard heat transfer from the pads to the caliper body. High-temperature square-faced bore seals are used to provide controlled piston retraction and reliable performance through their greater sealing surface area. This combination of components provides proven performance with a long service life and a history of reliable performance in any type of driving environment, including sustained extreme temperature competition applications. The caliper slide pin bores are fitted with dampening rings to minimize vibration noise. The caliper is also fitted with bleed screws at both ends to facilitate mounting in either left or right hand locations with either leading front or trailing rear mounting.
Rotor Dimensions
| Rotor Width (in) | 0.81 |
| Rotor Diameter (in) | 12.19 |
Pad Dimensions
| Pad Area (in²) | 8.7 |
| Pad Volume (in³) | 2.9 |
Usage Rating and Material
| Material | Forged Aluminum | Weight (lbs) | 4.6 |
Colors and Finishes
| Color | Red |
| Finish | Red Powder Coat |
Mounting
| Mounting Center (in) | 5.46 |
| Mounting Position | |
| Mounting Side | Universal |
| Mounting Type | Floating |
Specifications
Rotor Compatibility
| Rotor Width (inches) | 0.81 |
| Maximum Rotor Width (inches) | 0.81 |
| Minimum Rotor Width (inches) | 0.70 |
| Maximum Rotor Diameter (inches) | 12.19 |
| Minimum Rotor Diameter (inches) | 11.00 |
Brake Pad Specifications
| Brake Pad Type 1 | D154 |
| Brake Pad Type 2 | N-A |
| Brake Pad Type 3 | N-A |
| Total Pad Area (in²) | 8.7 |
| Total Pad Volume (in³) | 2.9 |
| Mounting |
Piston Specifications
| Piston 1 Bore (in) | 1.12 |
| Piston 2 Bore (in) | 1.12 |
| Piston 3 Bore (in) | |
| Total Piston Area (in²) | 1.98 |
Mounting
Specifications| Mount Type | Floating |
| Mount Side | Universal |
| Mounting Center (in) | 5.46 |
| Mount Hole Size (in) | 0.69 |
| Mount Height (inches) | 0.37 |
| Inlet Thread Size | M10 x 1.50 |
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