This R4 (radial) A/C compressor is designed to work with all Holley passenger-side R4 LS brackets, featuring a weatherproof 8mm pin clutch connector and a safer-RPM 5-inch clutch pulley.
Specifications:
- Category: HVAC
- Color: Black
- Engine: GM Gen III/IV (LS)
- Finish: Cast
- Material: Aluminum
- Product Type: A/C Compressor
- Pulley: Serpentine, 6-Groove
- Refrigerant: R134A
- Oil Type: PAG
- Sub Category: A/C Clutch and Compressor
- Warning: California Proposition 65
- Warranty: Manufacturer's Limited 90 Day Warranty
- Part Number: 199-100
Works with all Holley passenger-side R4 LS brackets and includes a port for a high-pressure safety switch. Designed for manifolds using a 5/8" x 5/8" sealing washer (washers not included); uses weatherproof plug/pigtail P/N 199-200 (not included). Pre-oiled from the manufacturer, with a tag noting oil type and quantity.
FAQ
What brackets does the 199-100 compressor fit?
All Holley passenger-side R4 LS brackets.
Is it pre-oiled?
Yes, pre-oiled with a tag noting oil type and quantity.
Does it include the sealing washers or pigtail plug?
No — washers and the weatherproof plug/pigtail (P/N 199-200) are sold separately.
What clutch connector does it use?
A weatherproof 8mm pin clutch connector.

