SKU: 71324732284

Fits 1979-1988 Chevrolet Monte Carlo; Transmission Crossmember-G-Body-LS - 12644

Sale price$179.97 Regular price$199.97
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Description

Fits 1979-1988 Chevrolet Monte Carlo; Transmission Crossmember-G-Body-LS - 12644Making it possible to fit almost any GM transmission into your G Body alongside an LS or LT, this updated transmission crossmember should be used with an aftermarket urethane transmission mount such as the Hooker Blackheart 71223029HKR or 71223030HKR or equivalent. Due to the unique design geometry of this transmission crossmember, attempts to install it with headers and or engine mounting plates brackets other than those developed by HOOKER for this

Making it possible to fit almost any GM transmission into your G-Body alongside an LS or LT, this updated transmission crossmember should be used with an aftermarket urethane transmission mount such as the Hooker Blackheart 71223029HKR or 71223030HKR or equivalent. Due to the unique design geometry of this transmission crossmember, attempts to install it with headers and/or engine mounting plates/brackets other than those developed by HOOKER™ for this application will more than likely not be successful. When used with the related Hooker™ 12643HKR or BHS5179 engine mounting bracket kit, this CAD designed transmission crossmember will replicate the stock small block Chevy engine/transmission inclination angle and eliminate or minimize the need to adjust the rear pinion angle in stock to moderately lowered chassis applications. Depending on the transmission, the following part numbers will be necessary: *No additional adapter needed for TH400/200R4/T-56/Magnum. TH350 Transmissions can reuse the factory transmission crossmember, but the slots in the center of the crossmember will need to be elongated in the forward direction. 12655HKR - 4L60/65/70/75 Transmission Adapter 12656HKR - 4L80/85 Transmission Adapter BHS5181 - 10L80/10L90 Car Transmission Adapter - must be used with BHS5182 (for G-Body) BHS5182 - 6L80/90, 8L45/80/90, 10L80/90 Transmission Adapter BHS5183 - Tremec TKX 5-Speed Transmission Adapter


Features:

  • This LS and LT Swap Crossmember for the GM G-Body has some very minor design updates & has been updated from 12644HKR to part number 12644HKR-1
  • Facilitates installation of a 4L60/4L65/4L70/4L80/TH400/2004R/T56/T56 behind an LS engine in 78-88 GM A/G Body applications (may require add-on bracket, see installation notes)
  • Designed using CAD modeling/FEA analysis for optimal fitment, strength, weight, safety and appearance
  • Welded steel construction
  • Provides an optimized engine/transmission inclination angle that is critical to obtaining suitable U-joint working angles, when installed with Hooker 12643HKR engine mounts
  • Designed in conjunction with other Hooker BlackHeart GM A/G-Body engine swap brackets to provide bolt-in installation of Hooker LS swap manifolds, headers and exhaust systems for this application
  • Provides the highest clearance available for up to 3" dual exhaust system routing

Specs:

Brand Hooker BlackHeart
Color Black
Emission Code 5
Engine GM Gen III/IV (LS)
Finish Black Powdercoated
Material Steel
Product Type Transmission Crossmember
Sale Category Engine Swap Parts
Transmission 200R4
Transmission 4L60E
Transmission 4L65E
Transmission 4L70E
Transmission 4L75E
Transmission 4L80E
Transmission 4L85E
Transmission T56 GM
Transmission T56 Magnum GM
Transmission TH400
Type of Component Crossmember

Application:

Year Make Model Submodel
1979-1988 Chevrolet Monte Carlo Base
1986-1988 Chevrolet Monte Carlo LS
1983-1988 Chevrolet Monte Carlo SS
1978-1988 Oldsmobile Cutlass Calais Base
1988 Oldsmobile Cutlass Calais GT
1988 Oldsmobile Cutlass Calais International
1988 Oldsmobile Cutlass Calais SL
1982-1988 Oldsmobile Cutlass Ciera Base
1982-1988 Oldsmobile Cutlass Ciera Brougham
1988 Oldsmobile Cutlass Ciera International
1982-1988 Oldsmobile Cutlass Ciera LS
1986-1988 Oldsmobile Cutlass Ciera S
1986-1988 Oldsmobile Cutlass Ciera SL
1978-1988 Oldsmobile Cutlass Supreme Base
1988 Oldsmobile Cutlass Supreme Classic
1988 Oldsmobile Cutlass Supreme Classic Brougham
1988 Oldsmobile Cutlass Supreme Indy 500 Pace Car
1988 Oldsmobile Cutlass Supreme International
1988 Oldsmobile Cutlass Supreme SL
1978-1988 Pontiac Grand Prix Base
1984-1988 Pontiac Grand Prix LE
1988 Pontiac Grand Prix SE
1988 Pontiac LeMans Aerocoupe
1988 Pontiac LeMans Aerocoupe YL
1978-1988 Pontiac LeMans Base
1988 Pontiac LeMans SE
1988 Pontiac LeMans Value Leader
1978-1987 Buick Regal Base
1987 Buick Regal GNX
1984-1987 Buick Regal Grand National
1978-1987 Buick Regal Limited
1978-1987 Chevrolet El Camino Base
1978-1987 Chevrolet El Camino SS
1978-1987 GMC Caballero Base
1978-1987 GMC Caballero Diablo
1980-1987 Oldsmobile Cutlass Base
1987 Oldsmobile Cutlass Eurosport
1987 Oldsmobile Cutlass Lujo
1985-1987 Oldsmobile Cutlass Salon
1985-1987 Oldsmobile Cutlass Ciera GT
1978-1987 Oldsmobile Cutlass Salon Base
1987 Oldsmobile Cutlass Supreme 442
1978-1987 Oldsmobile Cutlass Supreme Brougham
1981-1987 Pontiac Grand Prix Brougham
1983-1986 Buick Regal T-Type
1978-1986 Chevrolet El Camino Conquista
1981-1986 GMC Caballero Amarillo
1983-1986 Oldsmobile Cutlass Ciera ES
1985-1986 Oldsmobile Cutlass Ciera Holiday
1978-1986 Oldsmobile Cutlass Salon 442
1978-1986 Pontiac Bonneville Base
1978-1986 Pontiac Bonneville Brougham
1984-1986 Pontiac Bonneville LE
1984-1985 Oldsmobile Cutlass Ciera Cruiser
1984-1985 Oldsmobile Cutlass Ciera Cruiser LS
1981-1985 Oldsmobile Cutlass Supreme LS
1983-1984 Oldsmobile Cutlass Calais Hurst
1982-1983 Buick Regal Estate Wagon
1978-1983 Chevrolet Malibu Classic
1983 Chevrolet Monte Carlo CL
1980-1983 Oldsmobile Cutlass Cruiser Base
1978-1983 Pontiac Grand Prix LJ
1982 Buick Regal Limited Turbo
1978-1982 Buick Regal Sport
1979-1981 Chevrolet El Camino Royal Knight
1978-1981 Chevrolet Malibu Base
1978-1981 Chevrolet Malibu Classic Landau
1978-1981 Chevrolet Monte Carlo Landau
1981 GMC Caballero Conquista
1981 GMC Caballero Royal Knight
1980-1981 Oldsmobile Cutlass Brougham
1980-1981 Oldsmobile Cutlass LS
1981 Oldsmobile Cutlass Supreme
1980-1981 Oldsmobile Cutlass Cruiser Brougham
1978-1981 Pontiac Bonneville Safari
1978-1981 Pontiac LeMans Safari
1978-1980 Chevrolet Malibu Classic Estate
1979-1980 Chevrolet Malibu Classic Sport
1979-1980 Chevrolet Malibu Estate
1979-1980 Chevrolet Malibu Sport
1978-1980 Chevrolet Monte Carlo Sport
1978-1980 GMC Caballero Laredo
1978-1980 Oldsmobile Cutlass Salon Brougham
1978-1980 Pontiac Grand Prix SJ
1979 Chevrolet Malibu Landau
1979 Chevrolet Malibu Police
1978-1979 Oldsmobile Cutlass Vista Cruiser
1979 Oldsmobile Cutlass Vista Cruiser Brougham
1979 Oldsmobile Cutlass Salon Hurst
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: 71324732284

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4.3 ★★★★★
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A
Verified Purchase
Annette
Draper, US
★★★★★ 5
The best toothbrush, and I've tried them all!
Style: Small Dog, Size: 1 Count (Pack of 1)
I have a little 4 year old Maltese and Shih Tzu mix. She has very tiny teeth that are already starting to show signs of dental disease. I know it's important that they get brushed because small breed dogs are more prone to dental and gum problems. But I've tried every little toothbrush out there and it's a battle trying to brush her teeth. And unfortunately she usually wins! This brush is the best. It is soft and round and she completely tolerates it. I put a little doggie toothpaste on it, which she likes the taste of, and I'm finally able to at least move the brush and paste around her gum line. She still fights me a bit, but nothing like she used to. I would highly suggest that you give this toothbrush a try.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 16, 2023
A
Verified Purchase
Ana
Pawtucket, US
★★★★★ 1
Flimsy and snapped easily
Style: Big Dog, Size: 1 Count (Pack of 1)
Snapped in literally under a minute of using it. The toothbrush head is so small and the handle is really thin and flimsy even though it’s advertised for large dogs… I’m so disappointed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2025
L
Verified Purchase
Luke
Birmingham, US
★★★★★ 3
does the job
Style: Medium Dog, Size: 1 Count (Pack of 1)
Its does the job of cleaning my dachshunds teeth. The only issue is that the SMALL and MEDIUM are the same size. Small was okay but wanted something that would cover more area. Picked up the Medium and they are basicly if not the same size....
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2022
J
Verified Purchase
Jackie
Belleville, US
★★★★★ 5
Great
Style: Medium Dog, Size: 1 Count (Pack of 1)
So easy to use
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 22, 2025
M
Verified Purchase
Megan Townley
Massapequa, US
★★★★★ 4
It’s an okay toothbrush
Style: Big Dog, Size: 1 Count (Pack of 1)
I thought this design was very unique and a great idea when I bought the toothbrush. The handle is sort of harder to hold on to. I like how the toothbrush bristles are very soft and it is flat on the end to prevent back of the mouth injuries.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 2, 2024

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