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Description
Fits 1979-1988 Monte Carlo; LS or LT Swap Crossmember Add-On Bracket 12656HKR1978 1988 GM A G Body LS Swap Crossmember Add on Bracket for 4L80E 4L85E Transmissions *MUST be used in addition to Hooker Blackheart Transmission Crossmember 12644HKR 1 Features: Designed using CAD modeling FEA analysis for optimal fitment, strength, weight, safety and appearance Specs: Brand Hooker BlackHeart Color Black Emission Code 5 Engine GM Gen III IV (LS) Finish Black Powdercoated Material Steel Product Type Transmission Mount Transmission
1978-1988 GM A/G-Body LS-Swap Crossmember Add-on Bracket for 4L80E/4L85E Transmissions *MUST be used in addition to Hooker Blackheart Transmission Crossmember - 12644HKR-1
Features:
- Designed using CAD modeling/FEA analysis for optimal fitment, strength, weight, safety and appearance
Specs:
| Brand | Hooker BlackHeart |
|---|---|
| Color | Black |
| Emission Code | 5 |
| Engine | GM Gen III/IV (LS) |
| Finish | Black Powdercoated |
| Material | Steel |
| Product Type | Transmission Mount |
| Transmission | 4L80E |
| Transmission | 4L85E |
| Type of Component | Adapter |
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:
- 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
4.5 ★★★★★
Based on 1317 reviews
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Product Reviews
★★★★★ 5
This tire sealant works very well
Size: 16 oz
So far so good.
Cheaper and easier that tubing a leaking tire
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2026
★★★★★ 3
Hard to install as instructed.
Size: 32 oz
Nearly impossible to get it in the tire through the valve. Yes I removed the valve core.
Broke the bead on the tire and dumped it in. That worked great! So far no leaks.
They should definitely redesign the installation method.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 28, 2026
★★★★★ 5
Been using it for 15 years! Not sure where the Neg reviews come from?
Size: 16 oz
I've been using Liquitube since around 2010. I use it religiously in my ATVs and lawn tractor tires. Since I've been using this stuff, I've never had a flat before. I've pulled out nails and slivers of steel out of my ATV tires but yet none of them lose air or go flat.
I think some of the negative reviews come from improper use of the product or not enough of the product is being used in the tires. I think this come from variance in formula charts that Liquitube has had in the past on their bottles and on their website. The chart on their website wouldn't match the formula that was provided on the bottle. So I think alot of people get mixed up and not knowing the correct amount to add to each tire. Now Liquitube just puts pictures on the side of the bottle with an ounce measurement below each picture to tell people how to use it. But even that can be confusing. For instance, take the picture of the ATV that they show. Below the ATV it says 32oz. Now some people probably think the 32oz is for the entire ATV. Well that isn't the case. They want you to use 32oz Per Tire! Years ago Liquitube even used to say on the bottle to use 32oz per tire on an ATV. Now they just show a picture with an amount below it.
Now you'll come to find out that the 32oz they recommend doesn't match up to the formula they tell you to use to calculate how much each tire is supposed to get. So if you use the formula provided, you come to find that it calculates out to use less product per tire than what the bottle tells you to use. So that's very confusing as well.
So if you use it long enough, you'll be able to know how much each tire will need from experience. Just make sure there's enough on the inside of the tire to coat the entire inside as well as leaving a bit left over to circulate in the tire so it can be ready for a large puncture if that ever happens.
All in all, it's a good product that does what it claims. It lasts for as long as the tire does and it doesn't freeze up in the cold either! 5 stars!
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Reviewed in the United States on February 13, 2026
★★★★★ 5
Worth it for peace of mind to have in car
Works as described. Have used twice now. Takes a few minutes but will put air in tire. The cord is long enough to reach every tire.
Certainly loud when using
car must be on to use
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Reviewed in the United States on February 19, 2026
★★★★★ 5
Great true inflator
Great tire inflator also own a jumper pack in this brand, easy to use and great function to set the disired psi and auto shut off.
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Reviewed in the United States on January 18, 2026