QA1 52862 is the 1-3/8-inch tubular front sway bar engineered for 1977–1996 GM B-Body vehicles including the Chevrolet Caprice, Chevrolet Impala, Buick LeSabre, Buick Roadmaster, Oldsmobile Delta 88, Pontiac Bonneville, Pontiac Catalina, Pontiac Laurentian, and Pontiac Parisienne. Manufactured from hollow 4130 chromoly steel with a 3/16-inch wall and CNC-bent tubing, part number 52862 delivers a significant reduction in body roll without the weight penalty of a solid bar. Polyurethane bushings and plated mounting hardware are included. Installs in factory mounting locations. Backed by QA1's 1-year warranty.
QA1 52862 — At a Glance
| Specification | Detail |
|---|---|
| Part Number | 52862 |
| Position | Front |
| Bar Diameter | 1-3/8 in. (1.375 in.) |
| Wall Thickness | 3/16 in. |
| Construction | Hollow — CNC-bent, machined and welded bar ends |
| Material | 4130 Chromoly Steel |
| Finish | Powder-Coat |
| Bushings | Polyurethane — included |
| Mounting Hardware | Plated hardware — included |
| Installation | Factory mounting locations |
| Warranty | 1 Year Against Product Defects |
Why the 52862 Outperforms the Factory Bar
The factory sway bars on B-Body GM vehicles were sized for comfort-biased suspension tuning acceptable for cruising, inadequate for anything resembling spirited driving or autocross. The QA1 52862 is tuned specifically for this platform, with the 1-3/8-inch diameter and 3/16-inch wall thickness calculated to deliver the torsional stiffness needed for genuine handling improvement without being so stiff that it makes the car harsh on imperfect pavement.
The hollow 4130 chromoly construction is the key advantage over solid OEM-style bars. Chromoly has a higher strength-to-weight ratio than mild steel, so QA1 can achieve greater stiffness at a lower overall weight. The result is a bar that reduces body roll measurably distributing weight more evenly across all four tire contact patches in corners while adding less unsprung weight than a heavier solid replacement would. CNC-bent tubing ensures consistent geometry across every bar, and the machined and welded bar ends eliminate the flex points that reduce the effective stiffness of simple bent-tube designs.
What's Included with the QA1 52862
- 1-3/8 in. hollow 4130 chromoly front sway bar
- Polyurethane bushings
- Plated mounting hardware
- End links where applicable
Vehicle Fitment — Chevrolet
| Year | Make | Model |
|---|---|---|
| 1977 | Chevrolet | Caprice |
| 1978 | Chevrolet | Caprice |
| 1979 | Chevrolet | Caprice |
| 1980 | Chevrolet | Caprice |
| 1981 | Chevrolet | Caprice |
| 1982 | Chevrolet | Caprice |
| 1983 | Chevrolet | Caprice |
| 1984 | Chevrolet | Caprice |
| 1985 | Chevrolet | Caprice |
| 1986 | Chevrolet | Caprice |
| 1987 | Chevrolet | Caprice |
| 1988 | Chevrolet | Caprice |
| 1989 | Chevrolet | Caprice |
| 1990 | Chevrolet | Caprice |
| 1991 | Chevrolet | Caprice |
| 1992 | Chevrolet | Caprice |
| 1993 | Chevrolet | Caprice |
| 1994 | Chevrolet | Caprice |
| 1995 | Chevrolet | Caprice |
| 1996 | Chevrolet | Caprice |
| 1977 | Chevrolet | Impala |
| 1978 | Chevrolet | Impala |
| 1979 | Chevrolet | Impala |
| 1980 | Chevrolet | Impala |
| 1981 | Chevrolet | Impala |
| 1982 | Chevrolet | Impala |
| 1983 | Chevrolet | Impala |
| 1984 | Chevrolet | Impala |
| 1985 | Chevrolet | Impala |
| 1994 | Chevrolet | Impala SS |
| 1995 | Chevrolet | Impala SS |
| 1996 | Chevrolet | Impala SS |
Vehicle Fitment — Buick
| Year | Make | Model |
|---|---|---|
| 1977 | Buick | LeSabre |
| 1978 | Buick | LeSabre |
| 1979 | Buick | LeSabre |
| 1980 | Buick | LeSabre |
| 1981 | Buick | LeSabre |
| 1982 | Buick | LeSabre |
| 1983 | Buick | LeSabre |
| 1984 | Buick | LeSabre |
| 1985 | Buick | LeSabre |
| 1991 | Buick | Roadmaster |
| 1992 | Buick | Roadmaster |
| 1993 | Buick | Roadmaster |
| 1994 | Buick | Roadmaster |
| 1995 | Buick | Roadmaster |
| 1996 | Buick | Roadmaster |
Vehicle Fitment — Oldsmobile
| Year | Make | Model |
|---|---|---|
| 1977 | Oldsmobile | Delta 88 |
| 1978 | Oldsmobile | Delta 88 |
| 1979 | Oldsmobile | Delta 88 |
| 1980 | Oldsmobile | Delta 88 |
| 1981 | Oldsmobile | Delta 88 |
| 1982 | Oldsmobile | Delta 88 |
| 1983 | Oldsmobile | Delta 88 |
| 1984 | Oldsmobile | Delta 88 |
| 1985 | Oldsmobile | Delta 88 |
Vehicle Fitment — Pontiac
| Year | Make | Model |
|---|---|---|
| 1977 | Pontiac | Bonneville |
| 1978 | Pontiac | Bonneville |
| 1979 | Pontiac | Bonneville |
| 1980 | Pontiac | Bonneville |
| 1981 | Pontiac | Bonneville |
| 1982 | Pontiac | Bonneville |
| 1983 | Pontiac | Bonneville |
| 1984 | Pontiac | Bonneville |
| 1985 | Pontiac | Bonneville |
| 1986 | Pontiac | Bonneville |
| 1987 | Pontiac | Bonneville |
| 1977 | Pontiac | Catalina |
| 1978 | Pontiac | Catalina |
| 1979 | Pontiac | Catalina |
| 1980 | Pontiac | Catalina |
| 1981 | Pontiac | Catalina |
| 1978 | Pontiac | Laurentian |
| 1979 | Pontiac | Laurentian |
| 1980 | Pontiac | Laurentian |
| 1981 | Pontiac | Laurentian |
| 1978 | Pontiac | Parisienne |
| 1979 | Pontiac | Parisienne |
| 1980 | Pontiac | Parisienne |
| 1981 | Pontiac | Parisienne |
| 1982 | Pontiac | Parisienne |
| 1983 | Pontiac | Parisienne |
| 1984 | Pontiac | Parisienne |
| 1985 | Pontiac | Parisienne |
| 1986 | Pontiac | Parisienne |
Comparing QA1 52862 to Companion Part Numbers
The 52862 is the standalone front sway bar for the 1977–1996 GM B-Body platform. QA1 offers the following companion and related part numbers for the same and adjacent platforms:
| Part Number | Description |
|---|---|
| 52862 | Front Sway Bar, 78-96 GM B-Body ← this part |
| 52894 | Rear Sway Bar, 73-77 GM A-Body / 77-96 GM B-Body |
| 52864 | Front & Rear Sway Bar Kit, 78-96 GM B-Body (52862 + 52894 bundled) |
| 52850 | Front Sway Bar, 71-76 GM B-Body |
| 52823 | Front Sway Bar, 65-70 GM B-Body |
| 52854 | Front Sway Bar, 78-88 GM G-Body Big Wheel |
If you want both front and rear on the 1977–1996 B-Body platform, consider the 52864 front and rear kit it pairs the 52862 front bar with the matching 52894 rear bar in a single purchase.
Frequently Asked Questions
What GM B-Body vehicles does the QA1 52862 fit?
The 52862 fits the Chevrolet Caprice (1977–1996), Chevrolet Impala (1977–1985, 1994–1996 SS), Buick LeSabre (1977–1985), Buick Roadmaster (1991–1996), Oldsmobile Delta 88 (1977–1985), Pontiac Bonneville (1977–1987), Pontiac Catalina (1977–1981), Pontiac Laurentian (1978–1981), and Pontiac Parisienne (1978–1986). It does not fit the Camaro, which is a GM F-Body on a different platform.
Does the QA1 52862 fit the Chevrolet Camaro?
No. The Camaro is a GM F-Body, not a B-Body. The 52862 is engineered exclusively for B-Body full-size GM cars. Camaro sway bars are a separate product line from QA1.
What is 4130 chromoly steel and why does QA1 use it?
4130 chromoly (chrome-molybdenum) steel has a significantly higher tensile strength than mild steel, allowing QA1 to use a hollow tube design that weighs less than a solid mild steel bar while actually being stiffer. The 1-3/8-inch diameter with a 3/16-inch wall is the result of QA1's application-specific tuning for the B-Body platform maximizing torsional stiffness where it matters while keeping unsprung weight low.
Does the QA1 52862 include bushings and hardware?
Yes. Every 52862 ships complete with polyurethane bushings and high-quality plated mounting hardware. No additional hardware kit is required for a standard installation.
Will the QA1 52862 work with the factory mounting locations?
Yes. The 52862 is designed to use the factory sway bar mounting locations on the B-Body chassis. No drilling, welding, or custom fabrication is required for installation.
What is the difference between the 52862 and the 52864?
The 52862 is the front sway bar only. The 52864 is a front and rear kit that pairs the 52862 front bar with the matching 52894 rear bar for the same 1977–1996 B-Body platform. If you plan to upgrade both ends, the 52864 kit is the more complete solution.
What year range does the 52862 actually cover?
QA1's product title references 78-96, but the fitment table begins in 1977 for several models including the Caprice, Impala, LeSabre, Delta 88, and Bonneville. Verify your exact year against the fitment tables above.
What warranty does the QA1 52862 carry?
QA1 backs the 52862 with a 1-year warranty against product defects.
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