1‑800‑243‑8355
Help
Contact Us
Free Shipping
Shipping Information
Manufacturer Rebates
How To Order
Payment Options
Return Policy
FAQs
Emissions Regulations
Gift Card Balance
Sponsorship Opportunities
Company
Request Catalog
OPGI Blog
Hours & Location
History
Frequent Buyer Points
Volume Discounts
Price Match Guarantee
Kit Swap Savings
Reviews
Careers
Clearance Sale
Archives
My Account
My Orders
My Wish List
As seen on
1953
New Design
My Garage
72
View Garage
1979
GMC
K35/K3500
Shop Parts
Filter Search
1955
GMC
New Design
Shop Parts
Filter Search
1964
Pontiac
Bonneville
Shop Parts
Filter Search
1968
Pontiac
Grand Prix
Shop Parts
Filter Search
1987
GMC
Jimmy
Shop Parts
Filter Search
1953
GMC
New Design
Shop Parts
Filter Search
1967
GMC
K25/K2500
Shop Parts
Filter Search
1938
Cadillac
Series 62
Shop Parts
Filter Search
1952
Cadillac
Series 75
Shop Parts
Filter Search
1973
GMC
C35/C3500
Shop Parts
Filter Search
1985
Buick
Grand National
Shop Parts
Filter Search
1972
GMC
C15/C1500
Shop Parts
Filter Search
1948
Cadillac
Series 75
Shop Parts
Filter Search
1962
GMC
K15/K1500
Shop Parts
Filter Search
1961
Buick
Skylark
Shop Parts
Filter Search
1938
Cadillac
Series 65
Shop Parts
Filter Search
1937
Cadillac
Series 75
Shop Parts
Filter Search
1976
Pontiac
Grand Prix
Shop Parts
Filter Search
1972
GMC
C35/C3500
Shop Parts
Filter Search
1959
Cadillac
Series 62
Shop Parts
Filter Search
1976
GMC
C35/C3500
Shop Parts
Filter Search
1982
GMC
K25/K2500
Shop Parts
Filter Search
1969
Oldsmobile
Cutlass
Shop Parts
Filter Search
1981
GMC
C35/C3500
Shop Parts
Filter Search
1946
Cadillac
Series 75
Shop Parts
Filter Search
1964
Pontiac
Catalina
Shop Parts
Filter Search
1971
Pontiac
Catalina
Shop Parts
Filter Search
1969
Pontiac
GTO
Shop Parts
Filter Search
1976
GMC
Jimmy
Shop Parts
Filter Search
1982
GMC
C35/C3500
Shop Parts
Filter Search
1983
GMC
C35/C3500
Shop Parts
Filter Search
1976
Chevrolet
El Camino
Shop Parts
Filter Search
1986
GMC
C35/C3500
Shop Parts
Filter Search
1984
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1968
GMC
C35/C3500
Shop Parts
Filter Search
1944
Cadillac
Series 62
Shop Parts
Filter Search
1966
Pontiac
Catalina
Shop Parts
Filter Search
1962
GMC
K25/K2500
Shop Parts
Filter Search
1983
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1948
GMC
New Design
Shop Parts
Filter Search
1983
GMC
Jimmy
Shop Parts
Filter Search
1960
GMC
K25/K2500
Shop Parts
Filter Search
1964
Chevrolet
Corvair
Shop Parts
Filter Search
1971
GMC
C35/C3500
Shop Parts
Filter Search
1968
Pontiac
Catalina
Shop Parts
Filter Search
1985
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1984
GMC
C15/C1500
Shop Parts
Filter Search
1973
GMC
Jimmy
Shop Parts
Filter Search
1981
GMC
K25/K2500
Shop Parts
Filter Search
1982
GMC
C15/C1500
Shop Parts
Filter Search
1985
GMC
C35/C3500
Shop Parts
Filter Search
2004
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1962
GMC
C15/C1500
Shop Parts
Filter Search
1991
Cadillac
Eldorado
Shop Parts
Filter Search
1949
Cadillac
Series 75
Shop Parts
Filter Search
1980
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1972
GMC
Jimmy
Shop Parts
Filter Search
1987
GMC
K25/K2500
Shop Parts
Filter Search
1970
GMC
C35/C3500
Shop Parts
Filter Search
1981
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1971
Chevrolet
Chevelle
Shop Parts
Filter Search
1982
GMC
K35/K3500
Shop Parts
Filter Search
1950
Cadillac
Series 60 Fleetwood
Shop Parts
Filter Search
1962
Chevrolet
Corvair
Shop Parts
Filter Search
1973
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1983
GMC
K35/K3500
Shop Parts
Filter Search
1986
Chevrolet
Monte Carlo
Shop Parts
Filter Search
1971
GMC
Jimmy
Shop Parts
Filter Search
1936
Cadillac
Series 67
Shop Parts
Filter Search
1978
GMC
C15/C1500
Shop Parts
Filter Search
1965
GMC
C35/C3500
Shop Parts
Filter Search
2005
Chevrolet
Monte Carlo
Shop Parts
Filter Search
Shop All Parts
+ Add Vehicle
Catalogs
Cart
Have a Question?
Ask our Experts
Mon‑Fri 8:00‑4:30 PT
Experts Offline
Interior
Door Handles & Hardware
Door & Window Handles, Door Hinges
Emblems
Reproduction, Aftermarket, Kits, Hardware
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Gauges & Accessories
Gauges, Panels, Kits, Sending Units
Interior Accessories
Armrests, Carpet, Flooring, Consoles, Dash, Door, Glove Box
Keys & Locks
Hardware, Keys, Locks, Sets, & Switches
Mirrors & Hardware
Mirrors, Mounting Hardware
Exterior
Decals
Decals, Body Stripes, Misc
Emblems
Reproduction, Aftermarket, Kits, Hardware
Exhaust
Mufflers, Headers, Pipes, Mainfolds, Tips, Kits
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Gaskets & Seals
Adhesives, Gaskets, Seals, Weatherstripping
Keys & Locks
Hardware, Keys, Locks, Sets, & Switches
Lamps & Lenses
Headlights, Lamps, Lenses, Bulbs, Hardware
Mirrors & Hardware
Mirrors, Mounting Hardware
Wheels & Accessories
Lug Nuts, Bolts, Studs, Wheels, Accessories
Body Parts & Trim
Door Handles & Hardware
Door & Window Handles, Door Hinges
Mirrors & Hardware
Mirrors, Mounting Hardware
Moldings
Front End, Rear, Side, Window, Hardware
Sheet Metal & Body Panels
Doors, Hoods, Fenders, Quarter, Trunk, Floor, Armrest
Trunk Panels & Accessories
Mats, Dividers, Hardware, Accessories
Window
Glass, Motors, Regulators, Hardware
Suspension & Brakes
Brake Systems
Disc, Drum, Master Cylinders, Boosters, Pumps, Valves
Chassis & Suspension
Bushings, Mounts, Chassis, Steering, Suspension
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Engine & Drivetrain
Air & Fuel Delivery
Air Cleaners, Filters, Carburetors, Pumps, Tanks, Manifolds
Cooling & Heating
Air Conditioning, Controls, Fans, Motors, Cores, Radiators, Thermostats, Heaters, Pumps, Ducts
Decals
Decals, Body Stripes, Misc
Drivetrain
Differentials, Driveshafts, Chaines, Shifters, Transmissions, Bearings, Seals
Emblems
Reproduction, Aftermarket, Kits, Hardware
Engines & Components
Belts, Pulleys, Camshafts, Heads, Oiling Systems, Engines
Exhaust
Mufflers, Headers, Pipes, Mainfolds, Tips, Kits
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Fittings & Hoses
Fittings, Clamps, Brackets, Hoses, Lines, Plugs, Tubing, Valves
Gaskets & Seals
Adhesives, Gaskets, Seals, Weatherstripping
Ignition & Electrical
Alternators, Wiring, Horns, Starters, Distributors
Oils, Fluids & Sealer
Oils, Fluids, Grease, Lubricants, Grease, Cleaners, Sealers, Glues
Windshield Washer
Bottles, Pumps, Arms, Motors, Switches, Hardware
Audio & Electric
Gauges & Accessories
Gauges, Panels, Kits, Sending Units
Ignition & Electrical
Alternators, Wiring, Horns, Starters, Distributors
Mobile Electronics
Antennas, Radios, Speakers, GPS, iPod, Bluetooth
Tools & More
Books
Owners Manuals, Service Manuals, History
Car Care & Paint
Covers, Cleaners, Waxes, Polishes, Paints, Coatings, Dyes, Markers
Fasteners & Hardware
Bolts, Clips, Screws, Ties, Straps, Washer, Nuts
Gifts & Apparel
Shirts, Jackets, Hats, Plates, Garage Decor
Tools & Shop Equipment
Brake, Electrical, Engine, Fuel, Hand, Suspension, Wheel, Tire
×
We use cookies to ensure that we give you the best experience on our website. Click
here
for more information.
Got It
Savings End Soon!
Save up to 20% on Restoration - use code: USA250
Home
All
Brake Systems
Proportion Valves
Proportion Valves
Filters
12
24
36
48
60
96
120
Relevance
Best Selling
A-Z ↓
Z-A ↑
Highest Price ↑
Lowest Price ↓
Newest Arrivals
×
Product Type
Aftermarket
9
Performance
6
Restoration
48
Part Type
ABS Deceleration Sensor
1
Bolt Kit
1
Brake Bleeder Jar Kit
1
Brake Bleeder Screw
3
Brake Fluid
1
Brake Hydraulic Hose and Line Assembly
2
Brake Hydraulic Hose Fitting
1
Brake Hydraulic Line
12
Brake Hydraulic Line Clip
7
Brake Hydraulic Line Junction
1
Brake Proportioning Valve
19
Brake Proportioning Valve Bracket
3
Vacuum Brake Bleeder
2
Uncategorized
10
Category
Bolts & Studs
1
Brake System Tools
1
Disc Brakes
6
Exterior Clips & Screws
7
Lines
15
Oils, Fluids & Additives
1
Proportion Valves
64
Valves, Check & Shutoff
9
Washers & Nuts
6
Price
$1 - $100
52
$101 - $200
11
Brand
CPP
5
Fine Lines
13
General Motors
1
RESTOPARTS
3
Russell
3
Wilwood
2
Review Rating
ooooo
ooooo
16
ooooo
ooooo
10
ooooo
ooooo
2
ooooo
ooooo
2
Not Yet Reviewed
33
SALE
Fine Lines
Brake Line, Front/Rear, 1970 Pontiac A-Body Convertible, Disc
2 Finish Options
ooooo
ooooo
$51.99
Save an extra 12%
Use
USA250
at checkout
SALE
Distribution Block, Brake Fluid, 1970 Bonneville/Catalina/Grand Prix
ooooo
ooooo
$136.99
Save an extra 10%
Use
USA250
at checkout
SALE
Hold-Off Valve, Rear Disc Brake, 1970 GTO/Grand Prix
ooooo
ooooo
$57.99
Save an extra 9%
Use
USA250
at checkout
Wilwood
Proportioning Valve, Wilwood, Combination Style w/Brake Light Switch
ooooo
ooooo
$114.99
CPP
Proportioning Valve Set, GM Style, Disc/Drum or Disc/Disc, Side Mount
8 Style/Finish Options
ooooo
ooooo
From
$123.99
SALE
Distribution Block, Brake, 1959-65 Bonn/Cat/GP, Single Master Cylinder
ooooo
ooooo
$45.99
Save an extra 13%
Use
USA250
at checkout
SALE
Distribution Block, Drum Brakes, 1968-70 Chevrolet/GMC 1/2 Ton Truck
ooooo
ooooo
$101.99
Save an extra 6%
Use
USA250
at checkout
SALE
CPP
Rubber Boot, Disc Brake Proportioning Valve, 1964-72 A-Body
ooooo
ooooo
$3.55
Save an extra 16%
Use
USA250
at checkout
SALE
Hold-Off Valve, Front Disc Brakes, 1969 Bonneville/Catalina/Grand Prix
ooooo
ooooo
$102.99
Save an extra 10%
Use
USA250
at checkout
SALE
Distribution Block, Brake, 1966 Bonneville/Catalina/Grand Prix
ooooo
ooooo
$27.99
Save an extra 11%
Use
USA250
at checkout
SALE
Fine Lines
Brake Line, Front/Rear, 1967 BOP A-Body, Convertible
2 Finish Options
ooooo
ooooo
$31.99
Save an extra 10%
Use
USA250
at checkout
SALE
RESTOPARTS
Tool, Proportioning Valve Bleeder, 1964-88 GM Vehicles
ooooo
ooooo
$12.99
Save an extra 20%
Use
USA250
at checkout
SALE
Distribution Block, Brake, 1966 A-Body, w/Single Reservoir M/C
ooooo
ooooo
$27.99
Save an extra 11%
Use
USA250
at checkout
Distribution Block, Brake, 1966 Bonn/Cat/GP, Dual M/C or Power Disc Brakes
ooooo
ooooo
$45.99
SALE
Distribution Block, Brake, 1964-65 A-Body, Single Reservoir M/C
ooooo
ooooo
$27.99
Save an extra 15%
Use
USA250
at checkout
SALE
Fine Lines
Brake Line, Front To Rear, 1970 Pontiac A-Body, Hardtop (PAIR)
2 Finish Options
ooooo
ooooo
$51.99
Save an extra $2
Use
USA250
at checkout
SALE
Bracket, Proportioning Valve, 1971-72 A-Body
ooooo
ooooo
$38.99
Save an extra 8%
Use
USA250
at checkout
SALE
Hold-Off Valve, Front Disc Brakes, 1970 Bonneville/Catalina/Grand Prix
ooooo
ooooo
$112.99
Save an extra 12%
Use
USA250
at checkout
Bracket, 1967 GTO, Disc Brake Hold-Off Valve
ooooo
ooooo
$15.99
SALE
Bracket, Disc Brake Hold-Off Valve, 1967-70 A-Body
ooooo
ooooo
$17.99
Save an extra 7%
Use
USA250
at checkout
Wilwood
Brake Fluid, Wilwood, 570 Hi-Temp, 6-pack (SET)
ooooo
ooooo
$83.99
CPP
Proportioning Valve Set, GM Style, Disc/Drum or Disc/Disc, Under Mount
4 Finish Options
ooooo
ooooo
From
$143.99
Brake Valve, Residual Pressure
2 Option Options
ooooo
ooooo
$17.99
Russell
Speed Bleeders, Rear, Drum (PAIR)
ooooo
ooooo
$18.99
Page 2 of 3 - 64 Items
«
1
2
3
»
Page 2 of 3 - 64 Items
«
1
2
3
»
Free Ground Shipping
Free Ground Shipping on orders over $299 in the contiguous United States.
Shop Clearance
Save up to 55% on huge clearance deals on hundreds of items.
Earn Points for Free Parts
Earn points for every dollar you spend with OPGI’s Frequent Buyer Rewards Program.
Price Match Guarantee
We’ll price match any currently advertised retail price offered by a retail competitor.
Select Your Vehicle
Find parts that fit your vehicle
GM Cars
GM Trucks
Make
Model
Year
Go