o CNC Machined T6 billet aluminum direct fit firewall mounting plate design
o This model fits the early   GM "long rod / deep" master cylinder design   
   (scroll down to the see images at the bottom of this page for visual comparison)
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 Eliminates the factory stamped steel firewall reinforcement plate   
o 6.875 " installed length from firewall to MC mounting flange - no firewall modifications required

1967 - 1970 Chrysler B Body Hydraulic Brake Assist Unit - Model # 3673

*GM deep vs. shallow master cylinder design:

"early / deep"                 "late / shallow"

NOTE: Part # 3073L is the brake unit itself without power steering line set. Part # 3073 is the brake unit with the 4' power steering line set
This model is identical in all ways to the 3573 / 3673 models except for being equipped with the late model Mopar MC interface

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

1967 - 1970 Chrysler B Body Hydraulic Brake Assist Unit - Model # 3073

o CNC Machined T6 billet aluminum direct fit firewall mounting plate design
o This model fits the late model Mopar MC with plastic reservoir - see images to the right:
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 Eliminates the factory stamped steel firewall reinforcement plate   
o 6.875 " installed length from firewall to MC mounting flange - no firewall modifications required

NOTE: Part # 3673L is the brake unit itself without power steering line set. Part # 3673 is the brake unit with the 4' power steering line set.
This model is identical in all ways to the 3073 / 3573 models except for being equipped with the GM early / long pushrod MC interface 

1964 - 1974 Chrysler B Body Hydraulic Brake Assist Unit - Model # 3674

1964 - 1974 Chrysler B - Body Vehicles 

NOTE: This model for use with vehicles equipped with factory manual brakes
that would prefer to retain the factory manual brake firewall reinforcement plate

o TRUE MANUAL TO POWER BRAKE DIRECT BOLT IN UPGRADE!
o BOLTS DIRECTLY IN PLACE OF THE FACTORY FOUR BOLT MANUAL MC
   and also certain power brake models that bolt to the firewall with the small pattern 
   (scroll down to see the images at the bottom of this page for visual comparison)
o CNC Machined T6 billet aluminum direct fit firewall mounting plate design
o This model fits the early   GM "long rod / deep" master cylinder design   
   (scroll down to the see images at the bottom of this page for visual comparison)
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  Retains the factory stamped steel manual brake spec firewall reinforcement plate   
o 6 3/4 " installed length from firewall to MC mounting flange - no firewall modifications required

NOTE: Part # 3674L is the brake unit itself without power steering line set. Part # 3674 is the brake unit with the 4' power steering line set.
This model is identical in all ways to the 3574 / 3074 models except for being equipped with the GM early / long pushrod MC interface 

SHOW PREPARED MODEL 
SHOWN WITH PS LINE SET

MC8141 with black reservoir
9/16-20 Front Port - 1/2-20 Rear Port
Matches factory brake line fittings
Front Port = Rear Brake Circuit
Rear Port = Front Brake Circuit
Mopar Spec 3.200" Bolt Centers 

MC8144 with white reservoir

Both MC8141 and MC8144 have been proven to work
well with all popular disc / drum OR disc / disc brakes

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   
   (scroll down to the see images at the bottom of this page for visual comparison)
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 Eliminates the factory stamped steel firewall reinforcement plate   
o 6.875 " installed length from firewall to MC mounting flange - no firewall modifications required

1967 - 1970 Chrysler B Body Hydraulic Brake Assist Unit - Model # 3573

NOTE: Part # 3573L is the brake unit itself without power steering line set. Part # 3573 is the brake unit with the 4' power steering line set.
This model is identical in all ways to the 3073 / 3673 models except for being equipped with the GM late / short pushrod MC interface 

Model # 3573 installed with
'77-'82 Corvette MC8111 with 3.400" MC bolt centers

SHOW PREPARED MODEL 
SHOWN WITH PS LINE SET

MC8141 with black reservoir
9/16-20 Front Port - 1/2-20 Rear Port
Matches factory brake line fittings
Front Port = Rear Brake Circuit
Rear Port = Front Brake Circuit
Mopar Spec 3.200" Bolt Centers 

MC8144 with white reservoir

Both MC8141 and MC8144 have been proven to work
well with all popular disc / drum OR disc / disc brakes

1964 - 1974 Chrysler B Body Hydraulic Brake Assist Unit - Model # 3074

NOTE: This model for use with vehicles equipped with factory manual brakes
that would prefer to retain the factory manual brake firewall reinforcement plate

o TRUE MANUAL TO POWER BRAKE DIRECT BOLT IN UPGRADE!
o BOLTS DIRECTLY IN PLACE OF THE FACTORY FOUR BOLT MANUAL MC
   and also certain power brake models that bolt to the firewall with the small pattern 
  (scroll down to see the images at the bottom of this page for visual comparison)
o CNC Machined T6 billet aluminum direct fit firewall mounting plate design
o This model fits the late model Mopar MC with plastic reservoir - see images to the right:
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  Retains the factory stamped steel manual brake spec firewall reinforcement plate   
o 6 3/4 " installed length from firewall to MC mounting flange - no firewall modifications required

NOTE: Part # 3074L is the brake unit itself without power steering line set. Part # 3074 is the brake unit with the 4' power steering line set.
This model is identical in all ways to the 3574 / 3674 models except for being equipped with the late model Mopar MC interface 

Model 3074 with
MC39178 installed

Model # 3574 installed with
'77-'82 C3 Corvette MC3111

1964 - 1974 Chrysler B Body Hydraulic Brake Assist Unit - Model # 3574

NOTE: This model for use with vehicles equipped with factory manual brakes
that would prefer to retain the factory manual brake firewall reinforcement plate

o TRUE MANUAL TO POWER BRAKE DIRECT BOLT IN UPGRADE!
o BOLTS DIRECTLY IN PLACE OF THE FACTORY FOUR BOLT MANUAL MC
   and also certain power brake models that bolt to the firewall with the small pattern 
   (scroll down to see the images at the bottom of this page for visual comparison)
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 - see images to the right:
   (scroll down to the see images at the bottom of this page for visual comparison)
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  Retains the factory stamped steel manual brake spec firewall reinforcement plate   
o 6 3/4 " installed length from firewall to MC mounting flange - no firewall modifications required

NOTE: Part # 3574L is the brake unit itself without power steering line set. Part # 3574 is the brake unit with the 4' power steering line set.
This model is identical in all ways to the 3074 / 3674 models except for being equipped with the GM late / short pushrod MC interface 

Model 3574 with '77-'82
Corvette MC39052 installed

Model # 3673 with the GM
early / long MC pushrod is
a direct fit for the Wilwood
# 260-8556P master cylinder 

Model # 3674 with the GM
early / long MC pushrod is
a direct fit for the Wilwood
# 260-8556P master cylinder 

Model # 3074 / 3574 / 3674 with the small 
perimeter plate are a direct replacement for the Mopar offset / cantilever type factory
vacuum booster shown here

NOTE: 1971 - 1974 Chrysler B Body vehicles actually ran the 1970 - 1974 E Body firewall / engine compartment structure, which means the E Body brake assist systems are what you need - Click here for the E Body system listings: 

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