Carlson H5320-2 Disc Brake Key Spring - Front or Rear
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Carlson

Carlson H5320-2 Disc Brake Key Spring - Front or Rear

Brand Carlson H5320-2
Position Front
Fits Chevrolet, GMC, Dodge, and International · 329 vehicles

Brake hardware. Disc brake key spring for secure, reliable retention.

Replacement part. Direct-fit hardware for brake service and repair.

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Carlson Disc Brake Key Spring H5320-2

The Carlson H5320-2 Disc Brake Key Spring is a brake hardware component used in disc brake assemblies on a wide range of Chevrolet, GMC, and Dodge heavy-duty trucks and vans. It is a fitment-specific part for front and rear brake applications where the listed caliper and hardware codes apply.

Key Features

  • Disc brake key spring for brake hardware service and replacement
  • Compatible with front and rear applications, depending on vehicle and brake code
  • Fits many Chevrolet P30, C30, C3500, and GMC P3500/G3500 applications
  • Also listed for select Dodge W200, W250, W300, and W350 front disc brake setups
  • Part number H5320-2 for accurate ordering and catalog matching

Product Details

Carlson Disc Brake Key Spring H5320-2 is a brake hardware replacement part for vehicles using the specified disc brake hardware kits and caliper codes such as D89, D129, D149, D543, D717, and D380. It is listed across multiple years from 1974 through 2002 on Chevrolet, GMC, and Dodge platforms, including Chevrolet P30 front and rear disc brake applications, GMC P3500 front and rear disc brake applications, and heavy-duty Chevrolet C30 and GMC C3500 front brake setups. The Carlson H5320-2 is a practical choice when servicing worn or missing disc brake hardware on older commercial and heavy-duty vehicles.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Is Used For

  • Replacing a damaged or missing disc brake key spring during brake service
  • Restoring proper brake hardware retention in listed disc brake assemblies
  • Addressing brake noise caused by worn hardware in compatible setups
  • Supporting brake rebuilds on Chevrolet P30, GMC P3500, and similar heavy-duty platforms
  • Maintaining correct hardware function in front or rear disc brake configurations

Installation Notes and Tips

Verify the brake code, axle configuration, and position before ordering. This part is listed for specific front and rear applications, so match the vehicle year, make, model, and notes exactly to the fitment data. For best results, inspect the full brake hardware set during service and replace any worn retaining components at the same time.

Quality Assurance

Carlson brake hardware is cataloged for direct fitment by application, with coverage tied to the listed vehicle and brake-code combinations. Confirm the part number H5320-2 and the brake hardware code on the vehicle before installation.

This part fits 329 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2002ChevroletP30FrontD380
2001ChevroletP30FrontD380
2000ChevroletC35Front15,000 Lb GVWR; Except Wide Track Axle; D380
2000ChevroletC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
2000GMCC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1999ChevroletC35Front15,000 Lb GVWR; Except Wide Track Axle; D380
1999ChevroletC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1999ChevroletP30FrontD717
1999ChevroletP30RearDisc; D717
1999GMCC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1999GMCP3500RearD717
1999GMCP3500FrontD543
1998ChevroletC35Front15,000 Lb GVWR; Except Wide Track Axle; D380
1998ChevroletC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1998ChevroletP30FrontD717
1998ChevroletP30RearDisc; D717
1998GMCC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1998GMCP3500RearD717
1998GMCP3500FrontD717
1998GMCP3500FrontD543
1998GMCP3500Rearw/Rear Disc Brakes; D717
1997ChevroletC35Front15,000 Lb GVWR; Except Wide Track Axle; D380
1997ChevroletC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1997ChevroletP30FrontD717
1997ChevroletP30RearDisc; D717
1997GMCC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1997GMCP3500RearD717
1997GMCP3500FrontD717
1997GMCP3500FrontD543
1997GMCP3500Rearw/Rear Disc Brakes; D717
1996ChevroletC35Front15,000 Lb GVWR; Except Wide Track Axle; D380
1996ChevroletC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1996ChevroletG30Frontw/JB8; D149
1996ChevroletP30FrontD543
1996ChevroletP30RearD543
1996GMCC3500Front15,000 Lb GVWR; Except Wide Track Axle; D380
1996GMCG3500Frontw/JB8; D149
1996GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1996GMCP3500RearD717
1996GMCP3500FrontD717
1996GMCP3500FrontD543
1996GMCP3500Rearw/Rear Disc Brakes; D717
1995ChevroletC35Front12,500 Lb or 15,0000 Lb GVWR; D149
1995ChevroletC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1995ChevroletG30Frontw/JB8; D149
1995ChevroletP30FrontHeavy Duty Brakes; D543/D149
1995ChevroletP30Rearw/Rear Disc Brakes; D543/D149
1995GMCC3500Rear12,500 Lb or 15,000 Lb GVWR; D149
1995GMCC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1995GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1995GMCG3500Frontw/JB8; D149
1995GMCP3500RearD543/D149
1995GMCP3500FrontD543/D149
1995GMCP3500Frontw/JB8, JD8, JF9; D543/D149
1995GMCP3500Rearw/Rear Disc Brakes; D543/D149
1994ChevroletC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1994ChevroletG30Frontw/JB8; D149
1994ChevroletP30FrontHeavy Duty Brakes; D543/D149
1994ChevroletP30Rearw/Rear Disc Brakes; D543/D149
1994GMCC3500Rear12,500 Lb or 15,000 Lb GVWR; D149
1994GMCC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1994GMCG3500Frontw/JB8; D149
1994GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1994GMCP3500RearD543/D149
1994GMCP3500FrontD543/D149
1994GMCP3500Frontw/JB8, JD8, JF9; D543/D149
1994GMCP3500Rearw/Rear Disc Brakes; D543/D149
1993ChevroletC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1993ChevroletG30Frontw/JB8; D149
1993ChevroletP30FrontHeavy Duty Brakes; D543/D149
1993ChevroletP30Rearw/Rear Disc Brakes; D543/D149
1993DodgeW250Frontw/4500 lb. Axle; D149
1993DodgeW350FrontDisc Brake Hardware Kit, compatible with model D149.
1993GMCC3500Rear12,500 Lb or 15,000 Lb GVWR; D149
1993GMCC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1993GMCG3500Frontw/JB8; D149
1993GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1993GMCP3500RearD543/D149
1993GMCP3500FrontD543/D149
1993GMCP3500Frontw/JB8, JD8, JF9; D543/D149
1993GMCP3500Rearw/Rear Disc Brakes; D543/D149
1992ChevroletC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1992ChevroletG30Frontw/JB8; D149
1992ChevroletP30FrontHeavy Duty Brakes; D543/D149
1992ChevroletP30Rearw/Rear Disc Brakes; D543/D149
1992DodgeW250Frontw/4500 lb. Axle; D149
1992DodgeW350FrontDisc Brake Hardware Kit, compatible with model D149.
1992GMCC3500Rear12,500 Lb or 15,000 Lb GVWR; D149
1992GMCC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1992GMCG3500Frontw/JB8; D149
1992GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1992GMCP3500RearD543/D149
1992GMCP3500Frontw/JB8, JD8, JF9; D543/D149
1992GMCP3500FrontD543/D149
1992GMCP3500Rearw/Rear Disc Brakes; D543/D149
1991ChevroletC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1991ChevroletG30Frontw/JB8; D149
1991ChevroletP30FrontHeavy Duty Brakes; D543/D149
1991ChevroletP30Rearw/Rear Disc Brakes; D543/D149
1991ChevroletR3500FrontDisc Brake Hardware Kit, compatible with model D149.
1991ChevroletV3500FrontDisc Brake Hardware Kit, compatible with model D149.
1991DodgeW250Frontw/4500 lb. Axle; D149
1991DodgeW350FrontDisc Brake Hardware Kit, compatible with model D149.
1991GMCC3500Rear12,500 Lb or 15,000 Lb GVWR; D149
1991GMCC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1991GMCG3500Frontw/JB8; D149
1991GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1991GMCP3500RearD543/D149
1991GMCP3500FrontD543/D149
1991GMCP3500Frontw/JB8, JD8, JF9; D543/D149
1991GMCP3500Rearw/Rear Disc Brakes; D543/D149
1991GMCR3500FrontDisc Brake Hardware Kit, compatible with model D149.
1991GMCV3500FrontDisc Brake Hardware Kit, compatible with model D149.
1990ChevroletC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1990ChevroletG30Frontw/JB8; D149
1990ChevroletP30FrontHeavy Duty Brakes; D543/D149
1990ChevroletP30Rearw/Rear Disc Brakes; D543/D149
1990ChevroletR3500FrontDisc Brake Hardware Kit, compatible with model D149.
1990ChevroletV3500FrontDisc Brake Hardware Kit, compatible with model D149.
1990DodgeW250Frontw/4500 lb. Axle; D149
1990DodgeW350FrontDisc Brake Hardware Kit, compatible with model D149.
1990GMCC3500Rear12,500 Lb or 15,000 Lb GVWR; D149
1990GMCC3500Front12,500 Lb or 15,000 Lb GVWR; D149
1990GMCG3500Frontw/JB8; D149
1990GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1990GMCP3500RearD543/D149
1990GMCP3500FrontD543/D149
1990GMCP3500Frontw/JB8, JD8, JF9; D543/D149
1990GMCP3500Rearw/Rear Disc Brakes; D543/D149
1990GMCR3500FrontDisc Brake Hardware Kit, compatible with model D149.
1990GMCV3500FrontDisc Brake Hardware Kit, compatible with model D149.
1989ChevroletG30Frontw/JB8; D149
1989ChevroletP30FrontHeavy Duty Brakes; D543/D149
1989ChevroletP30Rearw/Rear Disc Brakes; D543/D149
1989ChevroletR3500FrontDisc Brake Hardware Kit, compatible with model D149.
1989ChevroletV3500FrontDisc Brake Hardware Kit, compatible with model D149.
1989DodgeW250Frontw/4500 lb. Axle; D149
1989DodgeW350FrontDisc Brake Hardware Kit, compatible with model D149.
1989GMCG3500Frontw/JB8; D149
1989GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1989GMCP3500RearD543/D149
1989GMCP3500FrontD543/D149
1989GMCP3500Frontw/JB8, JD8, JF9; D543/D149
1989GMCP3500Rearw/Rear Disc Brakes; D543/D149
1989GMCR3500FrontDisc Brake Hardware Kit, compatible with model D149.
1989GMCV3500FrontDisc Brake Hardware Kit, compatible with model D149.
1988ChevroletG30Frontw/JB8; D149
1988ChevroletP30FrontHeavy Duty Brakes; D543/D149
1988ChevroletP30Rearw/Rear Disc Brakes; D543/D149
1988ChevroletR30FrontDisc Brake Hardware Kit, compatible with model D149.
1988ChevroletV30FrontDisc Brake Hardware Kit, compatible with model D149.
1988DodgeW250Frontw/4500 lb. Axle; D149
1988DodgeW350FrontDisc Brake Hardware Kit, compatible with model D149.
1988GMCG3500Frontw/JB8; D149
1988GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1988GMCP3500RearD543/D149
1988GMCP3500FrontD543/D149
1988GMCP3500Frontw/JB8, JD8, JF9; D543/D149
1988GMCP3500Rearw/Rear Disc Brakes; D543/D149
1988GMCR3500FrontDisc Brake Hardware Kit, compatible with model D149.
1988GMCV3500FrontDisc Brake Hardware Kit, compatible with model D149.
1987ChevroletG30Frontw/JB8; D149
1987ChevroletP30Frontw/JB8, JD8; D149
1987ChevroletR30FrontDisc Brake Hardware Kit, compatible with model D149.
1987ChevroletV30FrontDisc Brake Hardware Kit, compatible with model D149.
1987DodgeW250Frontw/4500 lb. Axle; D149
1987DodgeW350FrontDisc Brake Hardware Kit, compatible with model D149.
1987GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1987GMCG3500Frontw/JB-8; D149
1987GMCP3500RearD543/D149
1987GMCP3500FrontHeavy Duty Brakes; D149
1987GMCP3500FrontD543/D149
1987GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1987GMCP3500Rearw/Rear Disc Brakes; D543/D149
1987GMCR3500FrontDisc Brake Hardware Kit, compatible with model D149.
1987GMCV3500FrontDisc Brake Hardware Kit, compatible with model D149.
1986ChevroletC30FrontDisc Brake Hardware Kit, compatible with model D149.
1986ChevroletG30Frontw/JB8; D149
1986ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1986ChevroletP30Frontw/JB8, JD8; D149
1986DodgeW250Frontw/4500 lb. Axle; D149
1986DodgeW350Frontw/4500 lb. Axle; D149
1986GMCC3500FrontDisc Brake Hardware Kit, compatible with model D149.
1986GMCG3500Frontw/JB-8; D149
1986GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1986GMCK3500FrontDisc Brake Hardware Kit, compatible with model D149.
1986GMCP3500RearD543/D149
1986GMCP3500FrontHeavy Duty Brakes; D149
1986GMCP3500FrontD543/D149
1986GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1986GMCP3500Rearw/Rear Disc Brakes; D543/D149
1985ChevroletC30FrontDisc Brake Hardware Kit, compatible with model D149.
1985ChevroletG30Frontw/JB8; D149
1985ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1985ChevroletP30Frontw/JB8, JD8; D149
1985DodgeW250Frontw/4500 lb. Axle; D149
1985DodgeW350Frontw/4500 lb. Axle; D149
1985GMCC3500FrontDisc Brake Hardware Kit, compatible with model D149.
1985GMCG3500Frontw/JB-8; D149
1985GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1985GMCK3500FrontDisc Brake Hardware Kit, compatible with model D149.
1985GMCP3500RearD543/D149
1985GMCP3500FrontHeavy Duty Brakes; D149
1985GMCP3500FrontD543/D149
1985GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1985GMCP3500Rearw/Rear Disc Brakes; D543/D149
1984ChevroletC30FrontDisc Brake Hardware Kit, compatible with model D149.
1984ChevroletG30Frontw/JB8; D149
1984ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1984ChevroletP30Frontw/JB8, JD8; D149
1984DodgeW250Frontw/4500 lb. Axle; D149
1984DodgeW350Frontw/4500 lb. Axle; D149
1984GMCC3500FrontDisc Brake Hardware Kit, compatible with model D149.
1984GMCG3500Frontw/JB-8; D149
1984GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1984GMCK3500FrontDisc Brake Hardware Kit, compatible with model D149.
1984GMCP3500RearD543/D149
1984GMCP3500FrontHeavy Duty Brakes; D149
1984GMCP3500FrontD543/D149
1984GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1984GMCP3500Rearw/Rear Disc Brakes; D543/D149
1983ChevroletC30FrontDisc Brake Hardware Kit, compatible with model D149.
1983ChevroletG30Frontw/JB8; D149
1983ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1983ChevroletP30Frontw/JB8, JD8; D149
1983DodgeW250Frontw/4500 lb. Axle; D149
1983DodgeW350Frontw/4500 lb. Axle; D149
1983GMCC3500FrontDisc Brake Hardware Kit, compatible with model D149.
1983GMCG3500Frontw/JB-8; D149
1983GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1983GMCK3500FrontDisc Brake Hardware Kit, compatible with model D149.
1983GMCP3500RearD543/D149
1983GMCP3500FrontHeavy Duty Brakes; D149
1983GMCP3500FrontD543/D149
1983GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1983GMCP3500Rearw/Rear Disc Brakes; D543/D149
1982ChevroletC30FrontDisc Brake Hardware Kit, compatible with model D149.
1982ChevroletG30Frontw/JB8; D149
1982ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1982ChevroletP30Frontw/JB8, JD8; D149
1982DodgeW250Frontw/4500 lb. Axle; D149
1982DodgeW350Frontw/4500 lb. Axle; D149
1982GMCC3500FrontDisc Brake Hardware Kit, compatible with model D149.
1982GMCG3500Frontw/JB-8; D149
1982GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1982GMCK3500FrontDisc Brake Hardware Kit, compatible with model D149.
1982GMCP3500RearD543/D149
1982GMCP3500FrontHeavy Duty Brakes; D149
1982GMCP3500FrontD543/D149
1982GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1982GMCP3500Rearw/Rear Disc Brakes; D543/D149
1981ChevroletC30FrontDisc Brake Hardware Kit, compatible with model D149.
1981ChevroletG30Frontw/JB8; D149
1981ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1981ChevroletP30Frontw/JB8, JD8; D149
1981DodgeW250Frontw/4500 lb. Axle; D129
1981DodgeW350FrontD129
1981GMCC3500FrontDisc Brake Hardware Kit, compatible with model D149.
1981GMCG3500Frontw/JB-8; D149
1981GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1981GMCK3500FrontDisc Brake Hardware Kit, compatible with model D149.
1981GMCP3500RearD543/D149
1981GMCP3500FrontHeavy Duty Brakes; D149
1981GMCP3500FrontD543/D149
1981GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1981GMCP3500Rearw/Rear Disc Brakes; D543/D149
1980ChevroletC30FrontDisc Brake Hardware Kit, compatible with model D149.
1980ChevroletG30Frontw/JB8; D149
1980ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1980ChevroletP30Frontw/JB8, JD8; D149
1980DodgeW200Frontw/4500 lb. Axle; D129
1980DodgeW300FrontDisc; D129
1980GMCC3500FrontDisc Brake Hardware Kit, compatible with model D149.
1980GMCG3500Frontw/JB-8; D149
1980GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1980GMCK3500FrontDisc Brake Hardware Kit, compatible with model D149.
1980GMCP3500RearD543/D149
1980GMCP3500FrontHeavy Duty Brakes; D149
1980GMCP3500FrontD543/D149
1980GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1980GMCP3500Rearw/Rear Disc Brakes; D543/D149
1979ChevroletC30FrontJB8; D149
1979ChevroletG30Frontw/JB8; D149
1979ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1979ChevroletP30Frontw/JB8, JD8; D149
1979DodgeW200Frontw/4500 lb. Axle; D129
1979DodgeW300FrontDisc; D129
1979GMCC3500Frontw/JB-8; D149
1979GMCC3500FrontDisc Brake Hardware Kit, compatible with model D149.
1979GMCG3500FrontDisc Brake Hardware Kit, compatible with model D149.
1979GMCG3500FrontJB-8; D149
1979GMCK3500FrontDisc Brake Hardware Kit, compatible with model D149.
1979GMCP3500RearD543/D149
1979GMCP3500FrontHeavy Duty Brakes; D149
1979GMCP3500FrontD543/D149
1979GMCP3500FrontDisc Brake Hardware Kit, compatible with model D149.
1979GMCP3500Rearw/Rear Disc Brakes; D543/D149
1978ChevroletC30FrontJB8; D129
1978ChevroletG30Frontw/JB8; D149
1978ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1978ChevroletP30Frontw/JB8, JD8; D149
1978DodgeW200Frontw/4500 lb. Axle; D129
1978DodgeW300FrontDisc; D129
1978GMCG35Frontw/JB-8; D89
1978GMCG35FrontDisc Brake Hardware Kit, compatible with model D149.
1977ChevroletC30FrontJB8; D129
1977ChevroletG30Frontw/JB8; D149
1977ChevroletK30FrontDisc Brake Hardware Kit, compatible with model D149.
1977ChevroletP30Frontw/JB8, JD8; D149
1977DodgeW200Frontw/4500 lb. Axle; D129
1977DodgeW300FrontDisc; D129
1977GMCG35Frontw/JB-8; D89
1977GMCG35FrontDisc Brake Hardware Kit, compatible with model D149.
1976ChevroletC30FrontJB8; D129
1976ChevroletG30Frontw/JB8; D149
1976ChevroletP30Frontw/JB8, JD8; D149
1976DodgeW200Frontw/4500 lb. Axle; D129
1976DodgeW300FrontDisc; D129
1976GMCG35Frontw/JB-8; D89
1976GMCG35FrontDisc Brake Hardware Kit, compatible with model D149.
1975ChevroletC30FrontJB8; D89
1975ChevroletG30Frontw/JB8; D89
1975ChevroletP30Frontexc. JB-7; D89
1975DodgeW200Frontw/4500 lb. Axle; D129
1975DodgeW300FrontDisc; D129
1975GMCG35FrontD89
1975GMCG35Frontw/JB-8; D89
1974GMCG35/G3500 VanFrontw/JB-8; D89
1974GMCG35/G3500 VanFrontD89