5396110500X | Genuine Sealco® Air Sping Brake Valve 3/8" NPT

1. Maintain Correct Ride Height

The valve adds or releases air from the air springs (air bags) to keep the truck or trailer level, regardless of load weight.

This ensures:

• Stable handling

• Proper steering geometry

• Even tire wear

2. Regulate Air Pressure in Air Springs

It prevents:

• Over-inflating the air bags

• Under-inflating the air bags

Correct air pressure protects suspension components and ensures a smooth ride.

3. Improve Braking Stability

In systems where the valve works alongside braking:

• It adjusts air pressure during braking

• Prevents suspension dive or wheel hop

• Helps maintain traction and stability

This is especially important on heavily loaded commercial vehicles.

4. Enhance Load Control and Comfort

A properly functioning valve makes sure the suspension adapts to load changes, improving:

• Ride comfort

• Load distribution

• Overall vehicle control

5. Protect Suspension Components

By ensuring proper air pressure, it extends the life of:

• Air springs

• Height control valves

• Air lines

• Brake components (in systems that integrate brake control)

• One of the most common symptoms

• Caused by coolant leaking into the exhaust system and burning off

• Smoke often has a sweet smell

2. Coolant Loss With No Visible Leak

• Coolant level drops over time

• No external drips because coolant is leaking inside the EGR cooler and going out the exhaust

3. Engine Overheating

• A failed cooler disrupts coolant flow

• Can cause the engine to run hot or overheat under load

4. Check Engine Light or EGR Codes

Common fault codes include:

• EGR flow insufficient

• EGR cooler efficiency

• EGR temperature sensor problems
  The ECM detects abnormal gas temperatures or incorrect EGR flow.

5. Poor Engine Performance

• Reduced power

• Rough idle

• Turbo lag

• Hesitation during acceleration
  If the cooler is clogged with soot, EGR flow becomes restricted.

6. Excessive Exhaust Back Pressure

• Caused by a clogged EGR cooler

• Can trigger turbo-related faults

• May cause the engine to run louder than usual

7. Sweet Smell From Exhaust

• Coolant entering the exhaust produces a sweet, antifreeze-like odor

8. Steam Coming From Exhaust

• Severe coolant contamination can create steam clouds, especially on startup

9. Contaminated Coolant

• Oil or soot mixing into coolant

• Coolant turns dark or sludgy