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USD 795
Part #: BSTEGR485

Bostech EGR Cooler Ugprade EGR485

2003-2008 Cummins ISL & QSL
Part #: BSTEGR485
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EGR485 replaces Cummins OE Part#: 4955485

Bostech has the EGR cooler problem solved. Most OEM coolers are failing due to cracking, which causes the water and exhaust to mix, or from becoming clogged with exhaust deposits. We have developed a process making the cooler much more reliable and maintenance free.

The Bostech design uses T304 stainless steel tubing to replace the turbulator design used inmost OEM coolers. The stainless steel tubing is tig welded to precision laser cut plates that are attached to the cooler housing. This will ensure the cooler will operate under the toughest of environments. This is a must for mass transit vehicles like school buses, ambulances, and wreckers/rollbacks.

1-year unlimited mileage warranty. 


  • MFG. Number EGR485
  • Manufacturer Name Bostech
  • Shipping Weight 15.00 lb.
  • Warranty Yes
  • Warranty Info 1 Year / Unlimited Mileage
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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Most Popular Questions

Are these EGR Coolers EPA approved for trasit vehicles and meet emission ? Are they legally allowed for use in Cummins ISL9 CM2150 & CM2250 engines for transit buses?
View Staff Answer 

The Bostech replacement EGR Coolers do not come with any documentation for DOT inspection. They do work in conjunction with the entire factory emission system and do not alter the functions of the EGR in any way. I would check with the testing facility to see if they require any specific certification.