Mack®

85153523 | Genuine Mack® EGR Valve For MP7, MP8, D11, D13

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Description: EGR Valve, Exhaust Gas Recirculation Valve For MP7, MP8, D11, D13
Condition: New
Brand: Volvo®
Part Number: 85153523

Vehicle Fitment:

Make	Engine	Approx. years
Volvo	D11	2008–2020
Volvo	D13	2008–2020
Mack	MP7	2008–2020
Mack	MP8	2008–2020

An Exhaust Gas Recirculation (EGR) valve is a part of a car’s engine emissions system. Its job is to send some of the engine’s exhaust gas back into the intake. This lowers combustion temperatures and helps reduce nitrogen oxide (NOx) emissions.

1. Engine burns fuel → produces hot exhaust gases.
2. EGR valve opens → allows a controlled amount of exhaust gas back into the intake.
3. Exhaust mixes with fresh air → this reduces the amount of oxygen available for combustion.
4. Combustion temperature decreases → the engine burns at a lower peak temperature.
5. NOx formation decreases → fewer nitrogen oxide pollutants are produced.
6. Exhaust emissions are reduced → helping the vehicle meet emissions standards.

Signs Of Faulty:

Check Engine Light
- The engine computer detects that the EGR system is not working correctly.
- Diagnostic trouble codes such as P0400–P0409 may appear.

Rough or Unstable Idle
- If the EGR valve is stuck open, too much exhaust gas enters the engine at idle.
- The engine may shake, run unevenly, or feel like it is going to stall.

Engine Hesitation
- When accelerating, the vehicle may hesitate or respond slowly.
- You may feel a brief jerking or stumbling sensation.

Loss of Engine Power
- A restricted or malfunctioning EGR system can cause poor acceleration.
- The problem may become more noticeable when going uphill or under heavy load.

Engine Stalling
- A valve stuck open can allow excessive exhaust gas into the intake.
- This can cause the engine to stall, especially when stopping or idling.

Poor Fuel Economy
- Incorrect EGR operation can interfere with the engine's air/fuel management.
- You may notice that the vehicle uses more fuel than normal.

Hard Starting
- If the EGR valve is stuck open, starting the engine can become difficult because the intake mixture is disrupted.

Engine Knocking or Pinging
- If the EGR valve is stuck closed, combustion temperatures can become higher.
- This can increase the possibility of knocking/pinging, particularly under load.

Increased Exhaust Emissions
- A malfunctioning EGR system can increase NOx emissions because the combustion temperature is not being controlled properly.

Manufacturer information
Mack trucks are built to last, but when the time for repair and maintenance comes it’s strongly recommended to use genuine Mack® components. Designed and manufactured according to strict OEM specifications, Mack parts offer the same engineering and performance as their stock equivalent. This ensures a seamless fit, smooth installation, and reliable operation overall. Mack offers a wide range of genuine parts, including engine, exhaust, transmission, cab, and body parts and accessories. It also offers remanufactured components that offer the same good-as-new quality at a more accessible price range. All genuine Mack parts are tested in both the laboratory and field environments to ensure they meet or exceed industry standards.

Warranty
First Truck Parts offers a 365-days warranty for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.

85153523 | Genuine Mack® EGR Valve For MP7, MP8, D11, D13

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