Holley Premium Mid-Mount Complete Accessory System 20-230BK
SKU: 15694967752

Holley Premium Mid-Mount Complete Accessory System 20-230BK

Sale price$1889.97 Regular price$2099.97
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Description

Holley Premium Mid-Mount Complete Accessory System 20-230BKComplete GM Gen V LT5 Accessory Drive System w Alt, P S, A C, Water Pump, Belts, and hardware. Black Finish 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.

Complete GM Gen V LT5 Accessory Drive System w/ Alt, P/S, A/C, Water Pump, Belts, and hardware. Black Finish

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
  • 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

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 LT5
Belt Included Yes
Brand Holley
Choose Your Part Accessory Drive Kits
Damper Included No
Damper Style Factory
Emission Code 5
Engine GM Gen V LT5
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: 15694967752

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4.9 ★★★★★
Based on 218 reviews
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A
Verified Purchase
Awesome reviews
Charlottesville, US
★★★★★ 5
Make sure you know the difference of high back vs mid back versions
Color: Brown, Size: Mid Back
I got a little confused by the reviews since they mix the high back version with the mid back. I thought the arm rests were adjustable and the back had some lean. Apparently only the high back version. That said, it is very nice. Its at least a hundred less than what you'd get at an office depot and it is generously sized and very supportive and comfortable. The assembly was relatively easy, instructions could have been a bit better. The piece connecting the seat and back doesn't sit flush with the mount that attached to the legs which is weird but it feels sturdy nonetheless. Overall it's very nice and the design is really cool, it looks like a 70s race car style seat. Exactly what I was looking for basically. I sort of wish I got the high back version for the adjustable arms and the ability to recline but it is a work chair for me mostly so I guess it doesn't need to lean back, even if it would be nice if it did.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 14, 2026
A
Verified Purchase
Andre
Whiting, US
★★★★★ 5
Excellent product. Great value, detailed parts and labels, outstanding construction.
Color: Brown, Size: Mid Back
Outstanding Purchase. The desk chair far exceeded my requirements and expectations. The price was so far below other office chairs that I was concerned that it would be shoddy, uncomfortable, cheap looking and impossible to put together. Materials were top grade, instructions were precise and all parts were market for location with "front and back" labels. Not a screw was missing or misaligned. Since my desk and office are in the Master, really impressed with the color and design. Very comfortable with good back support ,adjustment ease and arm support.. Bravo to your team!!!
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Reviewed in the United States on February 20, 2026
H
Verified Purchase
H
Charlottesville, US
★★★★★ 5
Lovely and comfortable
Color: Brown, Size: Mid Back
Well made and easy to put together. I bought 2 and found them both to be well worth the money. You can tell the quality is there vs. other chairs I’ve bought online before.
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Reviewed in the United States on May 6, 2026
K
Verified Purchase
KCrowley
Lowell, US
★★★★★ 4
Smooth!
Color: Brown, Size: Mid Back, Color: Brown, Size: Mid Back
Good value and looks pretty good. Faux leather feels like Naugahyde. Should be durable since that's what boat seat are made of. Could use a bit more lumbar support, but overall quite comfortable. Wider than I expected (so it must be designed for us Americans.) Casters are fantastic. Far superior to traditional plastic casters. Because these are made of rubber, they are dead quiet and smoooooth rolling across the flooring. Took about 30 minutes to assemble. Lots of parts but the pictorial instructions were clear. I'd give it five stars, but I wish it had a bit more height adjustment. We'll see how it holds up, but so far I'm pretty pleased.
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Reviewed in the United States on December 29, 2025
B
Verified Purchase
Buman
Lake Worth, US
★★★★★ 5
Very pleased with my purchase
Color: Brown, Size: Mid Back
Easy to put together - instructions are good - excellent quality and the chair is comfortable. Far from being flimsy it's a heavy chair which rolls perfectly as needed. You won't find that many good chairs (if any!) at this excellent price. As always the ultimate question is: would I buy it again? The answer is YES, definitively. Great purchase.
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Reviewed in the United States on May 23, 2026

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