Holley's Premium Polished Mid-Mount complete accessory system for LS engines uses a bracketless design where accessories bolt directly to the water pump for a clean, integrated look and better engine visibility. The kit includes an SFI certified damper with hard-anodized billet crank pulley, a 150-amp LT1-style alternator, an SD7 A/C compressor, and a Type II power steering pump with baffled reservoir, in a polished finish.
Specifications:
- Accessory Drive Style: Mid-Mount
- Engine: GM Gen III/IV (LS)
- Alternator: 150 Amp (included)
- A/C Compressor: SD7 (included)
- Damper: SFI Certified, hard-anodized billet crank pulley (included)
- Water Pump, Water Neck & Pulley: Included
- Power Steering Pump, Hardline & Reservoir: Included
- Inlet Size: 35.4mm / 1.4"
- Finish: Polished
- Material: Cast Aluminum
- Part Number: 20-180P
Fits all wet sump LS engines except supercharged applications; also fits dry sump LS engines converted to wet sump. Works with VVT applications and Hooker turbo manifolds. The power steering pump can be used with Hydroboost systems (refer to flow specs on part 198-101).
FAQ
What's included with the Holley 20-180P Premium Polished Mid-Mount system?
A water pump, SD7 A/C compressor, 150-amp alternator, Type II power steering pump with reservoir, and an SFI certified damper with hard-anodized billet crank pulley, in a polished finish.
What engines does the 20-180P fit?
All wet sump GM LS engines except supercharged applications; also fits dry sump LS engines converted to wet sump.
Is this compatible with VVT applications?
Yes, it works with VVT applications and Hooker turbo manifolds.
