Buy wp20560 - Genuine Cummins EGR Cooler ISB 6.7L - wisentpartscenter.com

Description

Genuine Cummins 5566897 EGR Cooler is the exhaust-gas-recirculation cooler used on Cummins 6.7L applications to lower the temperature of recirculated exhaust before it returns to the intake system. By pulling heat out of the EGR stream, the cooler helps the engine control combustion temperatures and NOx emissions without sending full exhaust heat back into the intake side.

Key Functions
- Cools recirculated exhaust gas before it re-enters the engine.
- Helps the EGR system control NOx emissions by lowering combustion temperature.
- Uses engine coolant to remove heat from the exhaust stream.
- Supports stable EGR flow in emissions-equipped 6.7L applications.

Verify fitment with us before ordering to ensure the correct part for your application.

Purpose of the Part

The 5566897 works as a heat exchanger inside the EGR system. Hot exhaust gas passes through the cooler before being routed back into the intake, which helps the engine use EGR without reintroducing excessive heat into the combustion process.

Issue Symptoms / When to Replace

A failing EGR cooler can cause unexplained coolant loss, white exhaust vapor, internal coolant leakage into the exhaust stream, or EGR-flow-related fault codes. In some cases the engine may show derates, poor performance, or repeat EGR problems if the cooler is restricted with soot or has started leaking internally. Because similar symptoms can also come from EGR valve, cooling-system, or head-gasket problems, the cooler should be diagnosed before replacement.

Brand Information

Cummins has used EGR cooling on many emissions-era diesel engines to control NOx output while maintaining engine performance.

Installation Notes

If the old cooler failed internally, the cooling system and EGR passages should be inspected and cleaned before the replacement goes on.

How to Identify an OEM Part

The genuine Cummins unit can be identified by the Cummins box label and the T. RAD North America sticker on the cooler itself.

Why Buy 5566897 from Wisent Parts

  • ⏱️
    Fast shipping
    Orders before 12PM EST ship same business day.
  • 🛡️
    180-day warranty
    All parts covered from delivery date.
  • ↩️
    Easy returns
    30-day returns.
  • ✅
    Verify fitment
    Send VIN/ESN and we’ll confirm.

Shop with confidence

Warranty & Return Information
Warranty Information

Wisent Parts offers a 180-day warranty on all parts from the date of delivery. This warranty covers orders placed directly through our website. If a part fails during this period, we’re here to help - whether it’s a replacement, repair, or refund. For full details, refer to the Warranty page.

Return Information

Wisent Parts accepts returns within 30 days of delivery. All returns are subject to a restocking fee. To qualify, parts must be unused and in their original condition. For full return instructions and restocking fee details, please refer to the Returns page.