20-370BK Mid-Mount Complete Accessory System for Small Block Ford [Black Finish]

Name: 20-370BK Mid-Mount Complete Accessory System for Small Block Ford [Black Finish]
Brand: HOLLEY
SKU: 510-20-370BK
Price: 2599.95 USD
Availability: InStock

^$2,599⁹⁵

1 left in stock

Ships on Sep 08, 2026

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Complete Small Block Ford Engine Drive Kits

Mid-Mount Complete Accessory System

Small Block Ford

Bracketless Design

Black Finish

Sold as a Kit

Breakdown of Included Hardware

Holley 510-20-370BK Features:

Holley's Mid-Mount accessory drives are now available for small block Ford engines! This complete accessory system features all components pulled in tighter than traditional accessory drives. At its core, the system employs a "bracketless" mounting design, allowing accessories to mount directly to a uniquely designed timing cover, resulting in a clean and integrated appearance. This design provides excellent engine visibility, allowing you to showcase your engine without unsightly accessory brackets. Additionally, the Holley-designed alternator is cutting-edge, utilizing innovative 6-phase technology similar to that found in the C7 Corvette. The water pump cartridge also benefits from design efficiencies derived from the C7 Corvette. Included in this system are a compact and reliable SD7 A/C compressor and a Type II power steering pump with a baffled reservoir. The design offers flexibility with two heater hose return port locations: one at the upper top and the other on the passenger side, positioned low.
When we say "complete," we mean it. The Mid-mount system includes everything you need for installation. All accessories are provided, including the water pump, A/C compressor, alternator, and power steering pump with reservoir. Additionally, all pulleys and belt are included. You'll also receive heater hose adapters, a power steering to -6 AN hardline, and the alternator plug/harness. Easy assembly was a priority throughout the development of this accessory solution. The color-illustrated instructions guide you through every step of the installation process.

Two return heater hose ports (upper center & pass-side low) with hose adapter/port plug included
P/S adapter hardline to AN -6 adapter included
C7 LT1 style water pump design
Compact SD7 A/C compressor
C7 LT1 style premium alternator, 150 amp
Type II power steering pump with baffled reservoir
OE pulley ratios for optimal accessory performance
Available in natural and black finishes
Billet alternator, tensioner, and compressor pulley covers
Bracketless accessory mounting integrated with supplied front timing cover assembly
Water pump inlet pipe mounts for either drivers-side or passenger-side lower radiator hose routing, timing cover also has mounting for driver or pass-side ignition timing pointers
Crankshaft belt pulley configured for 3 or 4-bolt crank dampers, spacer p/n’s 97-446, 97-447, or 97-448 are available for purchase to adjust for different OE crank damper pulley flange depth

Holley 510-20-370BK Notes:

Driver & pass-side A/C hose connections are available for purchase to account for A/C routing on different vehicles, p/n’s 97-443 (Left/Driver side) & 97-444 (right/Passenger side)
Power steering may be deleted with a drive belt change, see installation instructions for the commonly available drive belt required
A mechanical fuel pump may be used with this kit. See installation instructions for required timing cover mod to be performed and the power steering pump will need relocation, a remote mounted P/S reservoir also required

Part TypeAccessory Drive Belt Kit

BrandHOLLEY

Package Height17.2

Package Width18.3

Package Length24.3

Weight63.8 PG

Part CategoryPerformance Parts

Air Conditioning Pulley IncludedYes

Power Steering Pulley IncludedYes

Hardware IncludedYes

Water Pump Pulley IncludedYes

Pulley StyleSerpentine