Street. Track. Everything between.
Your garage Find parts for your vehicle Select year, make and model to narrow your search.

Holley Ford Mid-Mount Accessory Drive Systems 20-370 Systems, Mid-Mount, Serpentine, 150 Amp Alternator, GM Type 2 Power Steering, SD-7, Natural Finish, Ford, Kit

SKU: HLY20-370

Accessory Drive Systems

Holley Ford Mid-Mount Accessory Drive Systems 20-370 Systems, Mid-Mount, Serpentine, 150 Amp Alternator, GM Type 2 Power Steering, SD-7, Natural Finish, Ford, Kit

SKU: HLY20-370

Accessory Drive Systems
A$5,520.55
IN STOCK! Est Ship 4-7 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
View cart 0
We accept
American Express
Mastercard
Visa
PayPal Checkout
Direct Deposit
Afterpay
Apple Pay
Google Pay
Zip Pay

Description

Holley's mid-mount accessory drives are available for small-block Ford engines. These systems have all accessories pulled in tighter than other accessory drives. At their heart is a "bracket-less" mounting design—the accessories mount directly to a uniquely designed timing cover for a clean, integrated form. This product offers superb engine visibility to show off your engine, not unsightly accessory brackets. The premium alternator utilizes 6-phase technology as found on the C7 Corvette and only requires a one-wire hookup. The water pump cartridge also shares its design efficiencies with that of the C7 Corvette. A compact and reliable SD7 A/C compressor and Type II power steering pump with baffled reservoir are also integrated. This system design provides two heater hose return port locations (upper top and passenger-side low).

The mid-mount system comes complete with everything you need: the water pump, A/C compressor, alternator, and power steering pump with reservoir. All pulleys and the belt are supplied, along with heater hose adapters, power steering to-6 AN hardline, and the alternator plug/harness. Color graphical instructions walk you through every step for an easy installation. Systems are available with a natural or black finish.

Features and benefits:

* Bracket-less accessory mounting integrated with supplied front timing cover assembly means this kit will work on all block deck heights
* Water pump inlet pipe mounts for either driver or passenger side lower radiator hose routing; timing cover also has mounting for driver or passenger side ignition timing pointers to accommodate all needs
* Two return heater hose ports (upper center and pass-side low) with hose adapter/port plug included for a complete solution
* Crankshaft belt pulley configured for 3 or 4-bolt crank dampers; spacer P/Ns 97-446, 97-447, or 97-448 are available for purchase to adjust for different OE crank damper pulley flange depths
* Power steering may be deleted with a drivebelt 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 (use kit 97-436); a remote mounted P/S reservoir is also required
* C7 LT1 style premium alternator, 150 amp
* C7 LT1 style water pump design
* Compact SD7 A/C compressor
* Type II power steering pump with baffled reservoir
* P/S adapter hardline to-6 AN adapter included
* OE pulley ratios for optimal accessory performance

Part Type

Accessory Drive Systems

Data: v4.2 - Upd: 2026-10-14 11:14:47

Specifications

Product Attributes - Brand
Holley
Product Attributes - Manufacturer's Part Number
20-370
Product Attributes - Part Type
Accessory Drive Systems
Product Attributes - Product Line
Holley Ford Mid-Mount Accessory Drive Systems
Product Attributes - UPC
90127865248
Product Attributes - Pulley Style
Serpentine
Product Attributes - Crankshaft Pulley Included
Yes
Product Attributes - Crankshaft Pulley Material
Aluminum
Product Attributes - Crankshaft Pulley Color
Natural
Product Attributes - Crankshaft Pulley Bolt Hole Quantity
Three/Four
Product Attributes - Crankshaft Pulley Grooves
6-groove, serpentine
Product Attributes - Water Pump Material
Cast aluminum
Product Attributes - Water Pump Color
Natural
Product Attributes - Water Pump Rotation
Counterclockwise
Product Attributes - Water Pump Pulley Included
Yes
Product Attributes - Water Pump Pulley Material
Steel
Product Attributes - Water Pump Pulley Color
Black
Product Attributes - Water Pump Pulley Grooves
6-groove, serpentine
Product Attributes - Power Steering Pump Style
GM Type 2
Product Attributes - Power Steering Pump Color
Natural
Product Attributes - Power Steering Pump Reservoir Included
Yes
Product Attributes - Power Steering Pump Reservoir Style
Attached
Product Attributes - Power Steering Pump Reservoir Material
Plastic
Product Attributes - Power Steering Pump Reservoir Color
Black
Product Attributes - Power Steering Pulley Included
Yes
Product Attributes - Power Steering Pulley Material
Steel
Product Attributes - Power Steering Pulley Color
Black
Product Attributes - Power Steering Pulley Attachment
Press fit
Product Attributes - Power Steering Pulley Grooves
6-groove, serpentine
Product Attributes - Power Steering Brackets Included
Yes
Product Attributes - Power Steering Bracket Material
Aluminum
Product Attributes - Power Steering Bracket Color
Natural
Product Attributes - Alternator Material
Cast aluminum
Product Attributes - Alternator Color
Natural
Product Attributes - Alternator Amperage
150
Product Attributes - Alternator Style
1-wire
Product Attributes - Alternator Pulley Included
Yes
Product Attributes - Alternator Pulley Material
Steel
Product Attributes - Alternator Pulley Color
Black
Product Attributes - Alternator Pulley Grooves
6-groove, serpentine
Product Attributes - Alternator Fan Included
No
Product Attributes - Alternator Brackets Included
Yes
Product Attributes - Alternator Bracket Material
Aluminum
Product Attributes - Alternator Bracket Color
Natural
Product Attributes - Air Conditioning Compressor Type
SD7
Product Attributes - Air Conditioning Pulley Included
Yes
Product Attributes - Air Conditioning Pulley Material
Steel
Product Attributes - Air Conditioning Pulley Color
Natural
Product Attributes - Air Conditioning Pulley Grooves
6-groove, serpentine
Product Attributes - Air Conditioning Bracket Included
Yes
Product Attributes - Air Conditioning Bracket Material
Aluminum
Product Attributes - Air Conditioning Bracket Color
Natural
Product Attributes - Idler Included
No
Product Attributes - Idler Brackets Included
No
Product Attributes - Tensioner Included
Yes
Product Attributes - Tensioner Style
Spring-loaded
Product Attributes - Tensioner Pulley Color
Black
Product Attributes - Tensioner Cover Included
Yes
Product Attributes - Tensioner Cover Material
Aluminum
Product Attributes - Tensioner Cover Color
Polished
Product Attributes - Hardware Included
Yes
Product Attributes - Belt Included
Yes
Product Attributes - Finish
Natural
Product Attributes - Quantity
Sold as a kit.

Reference Information

Brand Name/s Holley
StreetFX SKU hly20-370
SFX Item ID 4782820
Supplier Item Code 4782820
Manufacturer SKU 20-370
Manufacturer UPC 90127865248
Alternative References HOL20-370, SD-7

Compatibility

Loading compatibility information...