SKU: 31270888379

Holley Big Block Chevy Mid-Mount Complete Accessory System - 20-242BK

Sale price$989.97 Regular price$1099.97
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14

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Description

Holley Big Block Chevy Mid-Mount Complete Accessory System - 20-242BKOverview: Holley's Mid Mount accessory drives are now available for your big block Chevrolet engines! The revolutionary system does what no other accessory bracket system has done GETS RID OF THE BRACKETS! The 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 (Patent Pending), where the accessories bolt directly to the water pump for a clean,

Overview:

Holley's Mid-Mount accessory drives are now available for your big block Chevrolet engines! The revolutionary system does what no other accessory bracket system has done… GETS RID OF THE BRACKETS! The 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 (Patent Pending), 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. 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 that of the C7 Corvette. The compact and reliable SD7 A/C compressor and Type II P/S pump with baffled reservoir are also integrated. The water pump design incorporates optional side or top heater ports. The top thermostat bypass and heater ports are recessed into the manifold. So if you don't need them, you don't see them! When we say "complete", we mean complete. The Mid-mount system comes with everything you need. All accessories are included; the water pump, A/C compressor, Alternator, and P/S pump with reservoir. All pulleys and the belt are supplied. Even A/C line adapter, heater hose adapters, power steering to -6 AN hardline, and the alternator plug/harness are included. Easy assembly was a priority during the entire development of this accessory solution. Color graphical instructions walk you through every step of the ultra-easy installation.

Features:

  • The Mid-Mount complete accessory system has all accessories pulled in tighter than other accessory drives.
  • Bracketless accessory mounting with ultra-easy assembly
  • O-ring seal to engine
  • Hidden thermostat bypass and heater hose ports with NPT line adapters included
  • LT1 style premium alternator
  • LT1 style water pump design
  • Compact SD7 A/C compressor with line adapter included
  • Type II power steering pump with baffled reservoir
  • P/S adapter hardline to AN -6 adapter included
  • OE pulley ratios for optimal accessory performance
  • Available in natural and black finishes
  • Billet alternator, tensioner, and compressor pulley covers

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

A/C Compressor Included Yes
A/C Compressor Type SD7
Accessory Drive Style Mid Mount
Alternator Amperage 150
Alternator Included Yes
Application Chevrolet Big Block
Belt Included Yes
Brand Holley
Choose Your Part Accessory Drive Kits
Damper Included No
Damper Style Factory
Emission Code 3
Engine Chevy Big Block V8
Finish Black
Inlet Size 35.4mm/1.4"
Material Cast Aluminum
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 Style Serpentine
Tensioner Included Yes
Thermostat Included No
Warranty Limited 90 Day
Water Neck Included Yes
Water Pump Included Yes
Water Pump Pulley Included Yes
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 31270888379

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4.3 ★★★★★
Based on 2128 reviews
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Amazon Customer
Houston, US
★★★★★ 5
Arrived quickly, great price & item as described!
Color: Ivory/Beige, Size: Pack of 30, Color: Ivory/Beige, Size: Pack of 30
Feel sturdy, good grip bought 2 packs to organize my clothes l, Skinny Metal and hangers to help my clothes fit better in my smaller closet. Already assembled with easy to unwrap cardboard. Versatile hangers, that will make my life easier!
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Reviewed in the United States on May 24, 2026
D
Verified Purchase
DEBORAH C. JONES
Draper, US
★★★★★ 4
Nice quality
Color: Gray/Silver, Size: Pack of 50
Best price for the quantity
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
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Simplified
Chelsea, US
★★★★★ 5
Space-Saving, Stylish, and Surprisingly Strong Closet Upgrade
Color: Black, Size: Pack of 100
I’ve been using these Amazon Basics slim velvet hangers, and they completely changed how organized my closet feels. The biggest difference is how much space they save. Because they’re so thin compared to regular plastic hangers, I was able to fit a lot more clothes in the same closet without it feeling crowded. The velvet coating is also a great feature. Clothes actually stay in place and don’t slip off, even lighter fabrics like tank tops or blouses. That alone makes getting dressed in the morning easier because I’m not constantly picking things up off the floor. They feel sturdy too. Even though they are slim, they hold heavier items like jackets and sweaters without bending or breaking. The shape helps keep clothes looking neat and prevents those annoying shoulder bumps that some hangers cause. I also like the clean black and silver look, it gives the closet a more uniform and organized appearance, which makes everything feel more put together. Overall, these hangers are a simple but very effective upgrade for any closet. They save space, keep clothes in place, and make everything look more organized without much effort.
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Reviewed in the United States on April 21, 2026
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Verified Purchase
Diana
Battle Creek, US
★★★★★ 5
Looks more organized than bulky plastic hangers and multiple colors
Color: Black/Rose Gold, Size: Pack of 100
Love these hangers! The cloth helps from shirts slipping off and holds them in place! Stylish and thin so doesn’t take up all space on rack either! I’ve changed all our hangers over to these! They are very durable and there’s no assembly obviously. I’ve had one break, but that was with a pair of jeans hanging on it and I yanked the jeans instead of pulling the hanger off and taking the jeans off the hanger so I would say they’re pretty durable. There’s a lot of overweight people here and so the jeans and certain items are pretty heavy. I’m able to hang my husband uniforms in sets on them pants and then the shirt over top. Love these hangers. However, customer service is unreachable and when order you may be waiting for months to receive them!
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Reviewed in the United States on April 2, 2026
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Angela Colson
Phoenix, US
★★★★★ 5
Good product
Color: Black, Size: Pack of 50
I love this product. Actually is the second time that I buy from this company. It is very sturdy and has a good grip and also is beautiful. I recommend it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026

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