o CNC Machined T6 billet aluminum direct fit firewall mounting plate design
o This model fits the  earlier GM "long rod / deep" master cylinder design
o All engines with PS pump on driver's side - compatible with rack and pinion conversions
o For use with disc / drum or disc / disc brakes (not for use with 4 wheel drum brakes)
o Features an adjustable brake pedal rod to allow for a range of brake pedal height adjustment
o Models with 4' / 6' PS line set include overlength hoses with re-usable / re-buildable hose ends  
o 6 3/4 " installed length from firewall to MC mounting flange - no firewall modifications required

1967 - 1972 Chevrolet / GMC C/K Truck Hydraulic Brake Assist Unit - Model # 3538

*GM deep vs. shallow master cylinder design:

"early / deep"                "late / shallow"

NOTE: Part # 3038L is the brake unit itself without power steering line set. Part # 3038 is the brake unit with the 4' power steering line set
This model is identical in all ways to the 3538 model except for being equipped with the late / shallow style short MC pushrod 

Dramatic Size Difference
                                             

1967 - 1972 Chevrolet / GMC C/K Truck Hydraulic Brake Assist Unit - Model # 3038

o CNC Machined T6 billet aluminum direct fit firewall mounting plate design
o This model fits the later GM "short rod / shallow" master cylinder design
o All engines with PS pump on driver's side - compatible with rack and pinion conversions
o For use with disc / drum or disc / disc brakes (not for use with 4 wheel drum brakes)
o Features an adjustable brake pedal rod to allow for a range of brake pedal height adjustment
o Models with 4' / 6' PS line set include overlength hoses with re-usable / re-buildable hose ends   
o 6 3/4 " installed length from firewall to MC mounting flange - no firewall modifications required

NOTE: Part # 3538L is the brake unit itself without power steering line set. Part # 3538 is the brake unit with the 4' power steering line set.
This model is identical in all ways to the 3038 model except for being equipped with the early / deep style long MC pushrod 

1967 - 1972 Chevy / GMC C/K Series Truck

SHOW PREPARED MODEL
SHOWN WITH PS LINE SET

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"early / long MC pushrod"                                       "late / short MC  pushrod"  

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