SKU: 14742057571

Holley Premium MidMount Complete Acc System GM Gen V LT4 Dry Sump Eng 20-221BK

Sale price$1777.47 Regular price$1974.97
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

Holley Premium MidMount Complete Acc System GM Gen V LT4 Dry Sump Eng 20-221BKOverview: Holley's complete accessory systems for LT4 and LT5 applications have all accessories pulled up and in tight. Plus, they add the much needed hydraulic power steering solution. There are no shortcuts here. Holley incorporates a splined dual bearing system that eliminates all belt stresses on the P S pump's internal bearings, assuring long life. The supercharger drive maintains the original and optimized belt path and tensioner. The accessory

Overview:

Holley's complete accessory systems for LT4 and LT5 applications have all accessories pulled up and in tight. Plus, they add the much needed hydraulic power steering solution. There are no shortcuts here. Holley incorporates a splined dual bearing system that eliminates all belt stresses on the P/S pump's internal bearings, assuring long life. The supercharger drive maintains the original and optimized belt path and tensioner. The accessory layout is as if the original manufacturer had designed it for your swap application. Included with each drive system is a throttle body angle correcting adapter that better positions the TB for swap applications as opposed to the aggressive original application intended angles. Versions of these accessory drives are available for both wet and dry sump applications.

Features:

  • Adds power steering without any belt load on the P/S pump
  • Notably more clearance to swap applications than other options
  • Original equipment look-Black finish
  • LT4 style premium alternator
  • LT4 style water pump design
  • Compact SD7 A/C compressor
  • A/C line adapters included
  • Type II power steering pump
  • P/S hard line adapters included
  • Bottom outlet swivel heater hose options for swap application clearance
  • Throttle body angle correcting adapter for easier intake tube routing on swap applications
  • OE pulley ratios for optimal accessory performance, allows for larger SC crank pulley
  • Available LT4/5 dry-sump & LT4 wet-sump applications
  • LT4/5 specific accessories available for plumbing oil cooler and PCV oil separator OE system

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 GM Gen V LT4
Belt Included Yes
Brand Holley
Choose Your Part Accessory Drive Kits
Damper Included No
Damper Style Factory
Emission Code 5
Engine GM Gen V LT4
Finish Black
Inlet Size 35.4mm/1.4"
Material Cast Aluminum
Oil System Type Dry Sump
Output 150 Amps
Power Steering Hardline Included Yes
Power Steering Pulley Included Yes
Power Steering Pump Included Yes
Power Steering Reservoir Included No
Product Type Accessory Drive Kits
Pulley Style Serpentine
Tensioner Included Yes
Thermostat Included Yes
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: 14742057571

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4.4 ★★★★★
Based on 11 reviews
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A
Verified Purchase
Amazon Customer
Los Angeles, US
★★★★★ 4
Cute for coffee bar!
Color: Black, Number Of Shelves: 4, Size: 15.7in
Great for above my coffee bar. Easy to mount and align. Seems stable!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 14, 2026
S
Verified Purchase
Samuel Roberts
Birmingham, US
★★★★★ 5
Great shelves, strong, secure, sturdy, decent size, unbeatable price.
Color: White, Number Of Shelves: 4, Size: 15.7in
Easy installation fits where we wanted them. Stable strong secure snug fit. Cleans easily with dust wipe. I would recommend buying these.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
C
Verified Purchase
Clara
Waukegan, US
★★★★★ 3
The shelves sag away from the wall overtime
Color: White, Number Of Shelves: 2, Size: 15.7in, Color: White, Number Of Shelves: 2, Size: 15.7in
Although the wood quality and finish of the shelf are clean and well-made, the main issue is that the shelves begin to sag over time while holding around 10 pounds, even though the product listing claims they can support up to 20 pounds. They may perform better on a brick wall, but on drywall you should be cautious. To fix the problem, I had to purchase floating shelf brackets for support, which solved the sagging issue. However, this defeats the purpose of the “floating” aesthetic. Since the shelf is in my bedroom, I can overlook it, but I personally wouldn’t install these in a common area if I wanted a clean floating look.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
M
Verified Purchase
Mo
West Palm Beach, US
★★★★★ 5
Love this
Color: Rustic Brown, Number Of Shelves: 4, Size: 15.7in
Love these shelves so easy to put up so beautifully made and really enjoy the way they set on my wall very sturdy also!
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Reviewed in the United States on May 21, 2026
J
Verified Purchase
Jason
Carnegie, US
★★★★★ 5
Looks nice, easy to install
Color: Rustic Brown, Number Of Shelves: 2, Size: 22in
This shelf is lightweight, looks nice, and was easy to install. It comes with a little level to help you install it properly. There are plenty of mounting holes to choose from, so it is easy to screw it directly into a stud, or to just use holes that are convenient for you. It comes with a plethora of mounting hardware. I mounted mine a bit high up and chose to mount it upside down so that I wouldn't see the three screws that hold the shelf to the mounting bracket.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 8, 2026

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