Third Generation GM F-Body Brake Upgrade - Part Numbers

Third Generation GM F-Body Brake Upgrade – Part Numbers (4/9)

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Here are the part numbers that will come in handy when upgrading your third generation F-body brakes.

Thirdgen F-body to Corvette C4 Y-Body Front Brake Upgrade Part Numbers

Thirdgen F-body to Corvette C4 Y-Body Front Brake Upgrade Part Numbers
	Qty.	GM Part #	AC-Delco #
1989-1994 12-Inch Front C4 NON-HD Corvette Setup
Left Caliper (JL9)	1	12520229	172-2139
Right Caliper (JL9)	1	12520230	172-2140
Left Caliper Carrier (JL9)	1	10181205
Right Caliper Carrier (JL9)	1	10181206
C4 Left Rear Rotor (JL9) (See Note)	2		18A288
OR
C4 Left Rear Rotor (Performance)	1		18A1052
C4 Right Rear Rotor (Performance)	1		18A1053

1989-1996 13-Inch Front C4 HD Corvette Setup
Left Caliper (J55)	1	12520231	172-2141
Right Caliper (J55)	1	12520232	172-2142
OR you can use the GS caliper
Left Caliper (GS, Z15, Z16)	1	12528689	172-2121
Right Caliper (GS, Z15, Z16)	1	12528690	172-2122

Left Caliper Carrier (J55)	1	10181207
Right Caliper Carrier (J55)	1	10181208
Left Rotor (J55)	1	10052203	177-678
Right Rotor (J55)	1	10052204	177-679
1LE rotor (For Hub)	2

Parts For Both Setups
Brake Pads (Standard)	1	12518935	171-735
Brake Pads (Performance)	1	12480043
Caliper Carrier Bolt	4	14084051
Caliper Carrier Washers	4	10268875
Top Spindle Bracket Bolt 12mm x 1.75 pitch x 45mm long	2
Bottom Spindle Bracket Bolt 12mm x 1.75 pitch x 30mm long	2	11508133
Brake Hose Gasket (Copper Washers)	4	10139097

NOTE: C4 Rear rotors are used on camaro C4 NON-HD 12-inch brake upgrades due to the rotor offset. This allow for the factory rotor to be turned down into a hub. Using a front rotor requires a larger offset hub, like the 1LE F-body, for clearance which is done on the C4 HD 13-inch brake upgrades.

82-92 Thirdgen F-body to Fouthgen F-body "LS1" 98-02 Front Brake Upgrade Part Numbers

82-92 Thirdgen F-body to Fouthgen F-body "LS1" 98-02 Front Brake Upgrade Part Numbers
	Qty.	GM Part #	AC-Delco #
Left Caliper	1	18042491
Right Caliper	1	18042492
OR you can use stronger C5 caliper
C5 Left Caliper	1	88895128
C5 Right Caliper	1	88895129

F-body Caliper Carrier (abutment bracket)	1	18026163
Left Rotor	1
Right Rotor	1
Factory 82-92 Rotor (for hub)	2

Parts For Both Setups
Brake Pads (Standard)	1
Brake Pads (Performance)	1
Caliper Bolt	4
Top Spindle Bracket Bolt 12mm x 1.75 pitch x 45mm long	2
Bottom Spindle Bracket Bolt 12mm x 1.75 pitch x 30mm long	2	11508133
Brake Hose Gasket (Copper Washers)	4	10139097

NOTE: You use the C5 caliper with the LS1 rotor and LS1 brake setup, you will need to use the F-body caliper carriers (abutment bracket) NOT the C5 caliper carriers (abutment bracket). The C5 and LS1 calipers are interchangeable but the C5 caliper is built to be stiffer due to the ribs on it and the casting method.

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Page created: January 2006
Page content last updated: June 2009

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