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Description
1977-1990 B-Body Crossmember RCB3-400Fits Models: Caprice, Impala, LeSabre, Oldsmobile 88, Bonneville, Parisienne, Catalina Fits Years: 77 90 Fits Transmissions: TH400 Short Tail, 2004R, 700R4 with B Body tailshaft Mount For Classic B Body builders, we've designed a direct bolt in transmission crossmember to accommodate both a 2004R or TH400 short tail transmissions, as well as a 700R4 with the tailshaft transmission mount. One crossmember, both transmissions! We accommodate both by
- Fits Models: Caprice, Impala, LeSabre, Oldsmobile 88, Bonneville, Parisienne, Catalina
- Fits Years: 77-90
- Fits Transmissions: TH400 Short Tail, 2004R, 700R4 with B-Body tailshaft Mount
- For Classic B-Body builders, we've designed a direct bolt-in transmission crossmember to accommodate both a 2004R or TH400 short tail transmissions, as well as a 700R4 with the tailshaft transmission mount. One crossmember, both transmissions!
- We accommodate both by using a second set of mounting holes on the crossmember which allows you to position the crossmember in two different locations while still using the factory crossmember mounting locations.
- No drilling, cutting, grinding, or welding is required.
- When considering the popular 700R4 or 4L65E, there are two basic transmission mount locations. One version utilizes a transmission mount directly behind the transmission pan on the transmission case. With the other version the transmission mount is located further forward and bolts to the tailshaft housing. It is crucial that you properly determine which mount location your 700R4 / 4L65E utilizes. The RCB3-400 is designed to accommodate the longer tailshaft mount. If you have the shorter case mount transmission, you will need to purchase our RCB3-700 crossmember.
- We recommend a polyurethane transmission mount. The GMTM is sold separately.
Application:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 1977-1981 | Pontiac | Bonneville | |
| 1977-1990 | Chevrolet | Caprice | |
| 1977-1981 | Pontiac | Catalina | |
| 1977-1990 | Oldsmobile | Custom Cruiser | |
| 1980-1983 | Buick | Estate Wagon | |
| 1977-1985 | Chevrolet | Impala | |
| 1977-1985 | Buick | LeSabre | |
| 1983-1986 | Pontiac | Parisienne | |
| 1977-1978 | Buick | Riviera | |
| 1987-1989 | Pontiac | Safari |
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
4.9 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 1
Not good
Do not order this item! It cracked my screen
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Reviewed in the United States on April 28, 2026
★★★★★ 3
Would be better with longer cable and without the LED light.
I like that the install is very easy, non-permanent, and can be very quickly removed if needed. It fast charges and the magnets are strong (the reviews that say it doesn’t hold probably aren’t using a MagSafe case).
That said I have two annoying issues:
1) There is a light that comes on when the car is turned on. If you don’t put your phone on the charger it will say on for a minute or two and then eventually turn off.
2) The included USB-C cable is too short. It only just barely reaches the outlet in the front bottom center console. It would be better if they had included a 6ft with a 90-deg connector to draw power from the back seat ports.
3) It doesn’t not include a charger.
In all, the mount and charger are fine, but be prepared to spend an extra $20 on a longer cable and charger to make it all work.
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Reviewed in the United States on November 4, 2025
★★★★★ 5
Great Mag case phone holder
Works great holding my phone in front of me while I drive.
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Reviewed in the United States on April 3, 2026
★★★★★ 2
Phone holder, not charger.
Nice plastic phone holder, works a lot better if you don’t have a phone case, it fits almost flushed. It doesn’t use “stickiness” to hold its self, just pressure from bottom phone, it holds nicely but has a little gap on the sides, it too much pressure is applied then Tesla screen starts showing pressure. The wire is small but reaches the under panel how ever, it does not fit flushed, will need to do some tinkering. I slide the wire under the charger where the phones go. Now the door can’t close but it can pass through. That charger is not fast but it works.
Edit: nah, don’t get it. The charger doesn’t charge, it will charge them stop. It works like a phone holder…
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Reviewed in the United States on April 15, 2026
★★★★★ 5
Works Very Good!!!
I been using this Tesla Car Mount Charger for a while and its very easy to used, it has good size, and, good quality. In general im satisfied!
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Reviewed in the United States on January 21, 2026