9 Inch GT Power Brake Booster + 22mm Master Cylinder
4037-9 Opel GT Source exclusive brand new larger power brake booster. Gives your GT a modern brake pedal response. Booster incorporates the one way check valve in the vacuum inlet nipple.
Note: We recommend a new booster hose PN# 4041.
4013-22 GT 22mm Master Cylinder Included.
This bigger bore Master Cylinder Fits all GT, and early Manta/1900 originally equipped with an ATE master cylinder.
NOTE: Will not fit in Opel GT's equipped with factory Air Conditioning. The AC condenser interferes with the bigger booster installation.
No Core required!