Holley Mid-Mount Complete Accessory Drive System 20-205BK
Holley Mid-Mount Complete Accessory Drive System 20-205BK
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Material:
Complete GM Gen V LT Accessory Drive System w/ Alt, P/S, A/C, Water Pump, Belts, and Crankshaft Damper
Holley's Mid-Mount complete accessory system has all accessories pulled in tighter than other accessory drives. At the heart of the system is a "bracketless" design, where the accessories bolt directly to the water pump for a clean, integrated form. The design offers superb engine visibility to show off your horsepower, not your accessories. Among the many swap-friendly features are bottom heater outlets for clearance in tight applications. The Holley-designed alternator is just as innovative. This premium alternator utilizes 6-phase technology as found on the C7 Corvette. The water pump also shares its design efficiencies with the C7 Corvette. The compact and reliable SD7 A/C compressor and Type II P/S pump with a baffled reservoir.
NOTES: Fits: GM Gen-V LT Engines (wet-sump), LV3/LV1 (V6 version of Gen-V LT engine), dry-sump LT engines converted to wet-sump (except LT2 and any supercharged). Optional A/C pulley cover (97-185) and Alternator pulley cover (97-187) are available separately.
Features:
- Bracketless accessory mounting with ultra-easy assembly
- Bottom outlet heater hose options for swap application clearance
- LT1 style premium alternator
- LT1 style water pump design
- Compact SD7 A/C compressor
- Type II power steering pump with baffled reservoir
- P/S, A/C adapter hardline to AN -6 adapter included
- Shortened top outlet nipple for more radiator hose turns and routing room
- OE pulley ratios for optimal accessory performance
- No adapters/spacers are required
- Works with all common aftermarket and factory throttle bodies and intakes
- Works with Hooker turbo manifolds
- All accessories are included; the water pump, A/C compressor, Alternator, P/S pump with reservoir, and the crank damper
- LT Mid-Mount drives fit ALL wet-sump LT V6 & V8 engines (except LT2 and any supercharged). Also, will fit dry sump LT engines converted to wet-sump (except LT2 and any supercharged)
Specs:
A/C Compressor Included | Yes |
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A/C Compressor Type | SD7 |
Accessory Drive Style | Mid-Mount |
Alternator Amperage | 150 |
Alternator Included | Yes |
Application | GM Gen V LT |
Belt Color | Black |
Belt Groove Quantity | 8 |
Belt Included | Yes |
Belt Type | Serpentine |
Brand | Holley |
Choose Your Part | Accessory Drive Kits |
Damper Included | Yes |
Damper Style | Cast Damper |
Emission Code | 5 |
Engine | GM Gen V LT1 |
Finish | Black |
Grade Type | Performance |
Housing Material | Aluminum |
Inlet Size | 35.4mm/1.4" |
Material | Cast Aluminum |
Oil System Type | Wet Sump |
Output | 150 Amps |
Power Steering Hardline Included | Yes |
Power Steering Pulley Included | Yes |
Power Steering Pump Included | Yes |
Power Steering Reservoir Included | Yes |
Product Type | Accessory Drive Kits |
Pulley Color | Black |
Pulley Style | Serpentine |
Sale Category | Engine |
Tensioner Included | Yes |
Thermostat Included | Yes |
Universal Or Specific Fit | Specific |
Warranty | Limited 90 Day |
Water Neck Included | Yes |
Water Pump Included | Yes |
Water Pump Pulley Included | Yes |






Policies and FAQs
Return Policy
Fault reasons include but are not limited to:
- Buyer was shipped the wrong product
- Buyer was shipped a damaged product
- The product page had incorrect fitment and the part does not fit the Buyer's vehicle
Opened boxes, plastic bags, and other packaging are not considered damage (excluding single use items such as, but not limited to, liquids, software, and other components that cannot be reused/resealed).
FAQs
|Q. What is an Intermediate Brake Line?
|A. This is the line that runs from the front of the vehicle to the rear. On most vehicles it connects to a junction then you will have rear axle lines. On a few cars the intermediate lines will connect to the rear wheels. It is recommended to change the axle lines if you are replacing the intermediate lines.
|Q. What is included in a pre bent brake line kit?
|A. Our kits include all of the solid metal lines for that section of the vehicle
|Q. I need to return something - what's your return policy?
|A. We are happy to help! Please help us to help you by going to our return form and filling out the form as best as you can in order to request a return.
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Modern Day stands by our parts and is happy to accept returns within 30 days of purchase. Parts must be in new condition.
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If a part arrives damaged, or is defective, Please report it to us immediately. So we can handle it for your promptly.