This Holley high-mount complete accessory drive kit brings everything needed to dress out an LS or LT swap in black, including an SD7 A/C compressor, alternator, power steering pump, tensioner, pulleys, and belt sourced from the same OE suppliers used on production vehicles.
Specifications:
- A/C Compressor Type: SD7
- Accessory Drive Style: High-Mount
- Alternator Output: 130 Amps
- Application: GM Gen III/IV (LS) and Gen V LT (L83/L84/L86/L93)
- Belt, Tensioner, Power Steering Pump & Pulley: Included
- Finish: Black
- Material: Cast Aluminum
- Part Number: 20-138BK
This bracket requires a separate installation kit (21-1, 21-2, or 21-3) matched to the engine's water pump and balancer offset. LT-series installs additionally need the 21-5 LT installation kit, a 22-100 LS water pump with forward-facing outlet, and a 717-15 throttle body angle adapter. The replacement belt is 97-171.
FAQ
What does the 20-138BK kit include?
It includes an SD7 A/C compressor, a 130-amp alternator, a power steering pump, a tensioner, pulleys, and a serpentine belt in a black finish, built for LS/LT engine swaps.
Does this kit come with a bracket installation kit?
No. It requires a separate installation kit (21-1, 21-2, or 21-3) chosen to match the vehicle's water pump and harmonic balancer offset.
Can this be installed on an LT-series engine?
Yes, but LT installations also require the 21-5 LT installation kit, a 22-100 LS water pump with forward-facing outlet, and a 717-15 throttle body angle adapter.
What is the replacement belt part number?
The replacement belt is Holley part number 97-171 (6-rib serpentine).
