SKU: 896462550

Holley Mid-Mount Race Accessory System - 20-187

Sale price$967.47 Regular price$1074.97
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Description

Holley Mid-Mount Race Accessory System - 20-187Overview: Holley's Mid Mount Accessory Drive System is now offered for the serious racer in mind. If you need a front drive system for your LS engine racecar, they are now available without air conditioning and power steering depending upon your needs! Holley's Premium 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

Overview:

Holley's Mid-Mount Accessory Drive System is now offered for the serious racer in mind. If you need a front drive system for your LS engine racecar, they are now available without air conditioning and power steering depending upon your needs! Holley's Premium 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. 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 that of the C7 Corvette. The Mid-Mount drive completes Holley's trilogy of accessory solutions giving a third option compared to the High and Low-Mount previously released. All three accessory solutions are for LS engines. When we say "complete", we mean complete. The Mid-Mount system comes with everything you need. All accessories are included; the water pump, alternator, and the crank damper. All pulleys and the belt are supplied. Even heater hose adapters, 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. This system is ready for the racetrack if you want to play or just be ready for anything on the street.

Features:

  • Bracketless accessory mounting with ultra-easy assembly
  • Bottom outlet heater hose options for swap application clearance
  • LT1 style premium 150 amp alternator
  • LT1 style water pump cartridge design
  • Steam tube input port
  • Shortened top outlet nipple for more radiator hose turns and routing room
  • OE pulley ratios for optimal accessory performance
  • No adapters/spacers required!
  • Works with all common aftermarket and factory Throttle bodies and intakes.
  • Works with VVT applications
  • Works with Hooker turbo manifolds.
  • Fits ALL LS engines except with dry sump and/or supercharger.

Application:

Year Make Model Submodel Engine Size
Universal

Specs:

A/C Compressor Included No
A/C Compressor Type N/A
Accessory Drive Style Mid Mount
Alternator Amperage 150
Alternator Included Yes
Application GM LS
Belt Included Yes
Brand Holley
Choose Your Part Accessory Drive Kits
Damper Included Yes
Damper Style Cast Damper
Emission Code 5
Engine GM LS
Finish Cast
Inlet Size 35.4mm/1.4"
Material Cast Aluminum
Output 150 Amps
Power Steering Hardline Included No
Power Steering Pulley Included No
Power Steering Pump Included No
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: 896462550

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Almira Pacleb
Natrona Heights, US
★★★★★ 1
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Color: Sweet Lilac, Color: Sweet Lilac
I recently purchased this bracelet and while I love the design, the lock is unfortunately not functional and won't stay secure.​ I am torn on this review. The bracelet is absolutely stunning I'd give the look a 5-star. It looks high-end and the design is perfect. ​The functionality is a 1-star. The lock is completely defective and does not stay closed, which makes it unwearable. It's disappointing to have such a beautiful piece that I can't actually use. If the clasp worked, this would be a perfect purchase.
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Reviewed in the United States on December 29, 2025
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Penny
Fort Morgan, US
★★★★★ 4
Beautiful but hard to lock/closed
Color: Pearl White
It’s really nice. The only reason I put only 4 stars is because it’s hard to close/lock it by yourself. Takes a few seconds, but everntually you’ll get it. Love that it’s mother of pearl and 18k gold plated, you won’t worry that it will smell like a rust. Material and quality is good. I have a big wrist and the size is just perfect for me. This is less than 8 because 8 is too big for me and 7 is super right only, not much allowance.
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Reviewed in the United States on March 29, 2026
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Danielle R.
Louisville, US
★★★★★ 5
Prettiest shade of blue MOP & beautiful bracelet!!!
Color: Ocean Blue
I instantly fell in love with this bracelet simply because of the blue Mother Of Pearl!! I love that it's 14 kt gold over stainless steel, because it won't turn or rub off so easily. It's absolutely gorgeous on the wrist & I can't stop wearing it! 10/10!!!
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Reviewed in the United States on October 24, 2025
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Michelle Renee Shaffar
Louisville, US
★★★★★ 5
Great for use atop the bedside table!
Very nice! I bought this for my father for his birthday, and he really liked the gift! It's a nice little place for him to keep all of his essentials together on the bedside table. No more losing his watch, keys, wallet, etc. or knocking them off the table!
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Reviewed in the United States on April 12, 2026
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Joselyn
Boise, US
★★★★★ 5
Excellent stylish organizer!
Excellent design and quality of material, practical and functional!
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Reviewed in the United States on October 1, 2025

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