This valve basically balances the braking force between the front and rear wheels. It adjusts how much pressure goes to the rear brakes, especially when you’re carrying a load or the vehicle is heavily weighted. It doesn’t make the brakes work, it just manages how that braking power is distributed. It’s a mechanical thing, so it responds to how much the rear of the vehicle is moving up and down. Think of it as a smart regulator in your brake lines. The front brakes do the bulk of the stopping, always. This valve makes sure the rear brakes don’t lock up before the front ones, which is really important for keeping control. Without it, if you slammed on the brakes, especially with a heavier load, the rear wheels could grab first, causing a skid or even spin. It's part of what keeps you stable during hard stops. It sits in the brake line, usually between the master cylinder and the rear brake lines. It’s really crucial for safety. If this valve fails, you’ll notice if the rear brakes are locking up prematurely, or if they’re not engaging enough. Either way, you're losing control and dramatically increasing your stopping distance. A failing valve can lead to instability, especially under braking. It's a relatively inexpensive part to replace considering what it does. You can find them pretty easily, we carry a good selection here, and Fixparts Online is another good source if you're looking around. Don’t put off replacing this if it’s giving you trouble, it's one of those things you really don't want to gamble with. Trusted brand, trusted warranty: Brake Proportioning Valve (MPN GPV1179) is covered for 12 months!

About TRW

TRW is renowned for its precision-engineered steering parts that meet or exceed OEM standards.

Why Choose TRW?

• TRW parts are made to the same high standards as the original parts your car came with, so you know you're getting quality. • We offer a wide range of parts, covering most popular car makes and models – making it easier to find what you need. • TRW has a long history of innovation and expertise in automotive safety technology – we've been a trusted name for over 100 years. • Choosing TRW gives you peace of mind knowing you’re investing in reliable parts designed for safety and performance. TRW delivers excellence, FixParts Online delivers to your door.