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Engines, Transmissions & Parts

Discover our extensive inventory of 2,794 tested, high-quality used OEM Buick parts. Every component is rigorously inspected with exact mileage-based pricing, 90-day warranty, and nationwide shipping.

2,794
Total Parts in Inventory
24
Compatible Models
90 Days
Complete Warranty
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Total Inventory

2,794

Quality Buick parts in stock, from common components to rare discontinued items.

Model Coverage

24

Compatible Buick models across multiple years, ensuring you find the perfect fit.

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1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH350, w/o multi-fit case; w/o Chev built engi...

1983 Buick Regal Somerset

SKU P-2353

transmission

1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH350, w/o multi-fit case; w/o Chev built engi...

$799$599–$999 by mileage
1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH350, w/o multi-fit case; w/o Chev built engi...

1983 Buick Regal Somerset

SKU P-2354

transmission

1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH350, w/o multi-fit case; w/o Chev built engi...

$799$599–$999 by mileage
1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH350, w/o multi-fit case; w/o Chev built engi...

1983 Buick Regal Somerset

SKU P-2355

transmission

1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH350, w/o multi-fit case; w/o Chev built engi...

$799$599–$999 by mileage
1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, w/o multi-fit case...

1983 Buick Regal Somerset

SKU P-2356

transmission

1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, w/o multi-fit case...

$799$599–$999 by mileage
1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, w/o multi-fit case...

1983 Buick Regal Somerset

SKU P-2357

transmission

1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, w/o multi-fit case...

$799$599–$999 by mileage
1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, diesel

1983 Buick Regal Somerset

SKU P-2358

transmission

1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, diesel

$799$599–$999 by mileage
1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, multi-fit case

1983 Buick Regal Somerset

SKU P-2359

transmission

1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, multi-fit case

$799$599–$999 by mileage
1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, w/o overdrive

1983 Buick Regal Somerset

SKU P-2360

transmission

1983 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, w/o overdrive

$799$599–$999 by mileage
1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH250, 6-231 (3.8L)

1984 Buick Regal Somerset

SKU P-2361

transmission

1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH250, 6-231 (3.8L)

$799$599–$999 by mileage
1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH250, w/o 6-231

1984 Buick Regal Somerset

SKU P-2362

transmission

1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH250, w/o 6-231

$799$599–$999 by mileage
1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, diesel

1984 Buick Regal Somerset

SKU P-2363

transmission

1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, diesel

$799$599–$999 by mileage
1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, multi-fit case

1984 Buick Regal Somerset

SKU P-2364

transmission

1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, multi-fit case

$799$599–$999 by mileage
1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, w/o overdrive

1984 Buick Regal Somerset

SKU P-2365

transmission

1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, w/o overdrive

$799$599–$999 by mileage
1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, w/o multi-fit case...

1984 Buick Regal Somerset

SKU P-2366

transmission

1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, w/o multi-fit case...

$799$599–$999 by mileage
1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, w/o multi-fit case...

1984 Buick Regal Somerset

SKU P-2367

transmission

1984 Buick Regal Somerset (1984 Down) Transmission - AT, TH200, overdrive, gasoline, w/o multi-fit case...

$799$599–$999 by mileage
1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, diesel

1985 Buick Regal Somerset

SKU P-2368

transmission

1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, diesel

$799$599–$999 by mileage
1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, gasoline, multi-fit case

1985 Buick Regal Somerset

SKU P-2369

transmission

1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, gasoline, multi-fit case

$799$599–$999 by mileage
1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, gasoline, w/o multi-fit ca...

1985 Buick Regal Somerset

SKU P-2370

transmission

1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, gasoline, w/o multi-fit ca...

$799$599–$999 by mileage
1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, gasoline, w/o multi-fit ca...

1985 Buick Regal Somerset

SKU P-2371

transmission

1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, gasoline, w/o multi-fit ca...

$799$599–$999 by mileage
1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; Chev built engine

1985 Buick Regal Somerset

SKU P-2372

transmission

1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; Chev built engine

$799$599–$999 by mileage
1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; w/o Chev built engine

1985 Buick Regal Somerset

SKU P-2373

transmission

1985 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; w/o Chev built engine

$799$599–$999 by mileage
1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; Chev built engine

1986 Buick Regal Somerset

SKU P-2374

transmission

1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; Chev built engine

$799$599–$999 by mileage
1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; w/o Chev built engine

1986 Buick Regal Somerset

SKU P-2375

transmission

1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; w/o Chev built engine

$799$599–$999 by mileage
1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, multi-fit case

1986 Buick Regal Somerset

SKU P-2376

transmission

1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, multi-fit case

$799$599–$999 by mileage
1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, w/o multi-fit case; Chev b...

1986 Buick Regal Somerset

SKU P-2377

transmission

1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, w/o multi-fit case; Chev b...

$799$599–$999 by mileage
1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, w/o multi-fit case; w/o Ch...

1986 Buick Regal Somerset

SKU P-2378

transmission

1986 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, w/o multi-fit case; w/o Ch...

$799$599–$999 by mileage
1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; Chev built engine

1987 Buick Regal Somerset

SKU P-2379

transmission

1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; Chev built engine

$799$599–$999 by mileage
1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; w/o Chev built engine

1987 Buick Regal Somerset

SKU P-2380

transmission

1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), w/o overdrive; w/o Chev built engine

$799$599–$999 by mileage
1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, multi-fit case

1987 Buick Regal Somerset

SKU P-2381

transmission

1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, multi-fit case

$799$599–$999 by mileage
1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, w/o multi-fit case; Chev b...

1987 Buick Regal Somerset

SKU P-2382

transmission

1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, w/o multi-fit case; Chev b...

$799$599–$999 by mileage
1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, w/o multi-fit case; w/o Ch...

1987 Buick Regal Somerset

SKU P-2383

transmission

1987 Buick Regal Somerset (1984 Down) Transmission - AT, (TH200), overdrive, w/o multi-fit case; w/o Ch...

$799$599–$999 by mileage
1988 Buick Regal Somerset (1984 Down) Transmission - AT

1988 Buick Regal Somerset

SKU P-2384

transmission

1988 Buick Regal Somerset (1984 Down) Transmission - AT

$799$599–$999 by mileage
1989 Buick Regal Somerset (1984 Down) Transmission - AT, 6-173 (2.8L)

1989 Buick Regal Somerset

SKU P-2385

transmission

1989 Buick Regal Somerset (1984 Down) Transmission - AT, 6-173 (2.8L)

$799$599–$999 by mileage
1989 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

1989 Buick Regal Somerset

SKU P-2386

transmission

1989 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

$799$599–$999 by mileage
1990 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

1990 Buick Regal Somerset

SKU P-2387

transmission

1990 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

$799$599–$999 by mileage
1990 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

1990 Buick Regal Somerset

SKU P-2388

transmission

1990 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

$799$599–$999 by mileage
1991 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

1991 Buick Regal Somerset

SKU P-2389

transmission

1991 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

$799$599–$999 by mileage
1991 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

1991 Buick Regal Somerset

SKU P-2390

transmission

1991 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

$799$599–$999 by mileage
1992 Buick Regal Somerset (1984 Down) Transmission - AT

1992 Buick Regal Somerset

SKU P-2391

transmission

1992 Buick Regal Somerset (1984 Down) Transmission - AT

$799$599–$999 by mileage
1993 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

1993 Buick Regal Somerset

SKU P-2392

transmission

1993 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

$799$599–$999 by mileage
1993 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

1993 Buick Regal Somerset

SKU P-2393

transmission

1993 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

$799$599–$999 by mileage
1994 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

1994 Buick Regal Somerset

SKU P-2394

transmission

1994 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

$799$599–$999 by mileage
1994 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

1994 Buick Regal Somerset

SKU P-2395

transmission

1994 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

$799$599–$999 by mileage
1995 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

1995 Buick Regal Somerset

SKU P-2396

transmission

1995 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

$799$599–$999 by mileage
1995 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

1995 Buick Regal Somerset

SKU P-2397

transmission

1995 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

$799$599–$999 by mileage
1996 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

1996 Buick Regal Somerset

SKU P-2398

transmission

1996 Buick Regal Somerset (1984 Down) Transmission - AT, 6-191 (3.1L)

$799$599–$999 by mileage
1996 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

1996 Buick Regal Somerset

SKU P-2399

transmission

1996 Buick Regal Somerset (1984 Down) Transmission - AT, 6-231 (3.8L)

$799$599–$999 by mileage
1997 Buick Regal Somerset (1984 Down) Transmission - AT, (6-231, 3.8L), supercharged option (4T65E)

1997 Buick Regal Somerset

SKU P-2400

transmission

1997 Buick Regal Somerset (1984 Down) Transmission - AT, (6-231, 3.8L), supercharged option (4T65E)

$799$599–$999 by mileage

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