EGR Cooler Specifications: Key Dimensions and Test Data
EGR cooler specifications matter when a buyer needs dimensional fit, thermal performance, and repeatable quality across batches. For procurement teams, the main checks are not limited to overall size. Tube geometry, core material, weld integrity, pressure resistance, flow capacity, and corrosion protection all affect service life and installation compatibility. A supplier should be able to provide controlled drawings, material declarations, and test records that support the part number being quoted. Driventus is an independent aftermarket manufacturer; brand names are referenced for fitment only. The details below are written for sourcing teams evaluating replacement and aftermarket supply for passenger car and light commercial diesel applications. The same principles also apply when comparing OE cross-references, especially where packaging space, coolant pressure, and soot loading differ by engine family.
What buyers should check in EGR cooler specifications
For sourcing teams, the technical sheet should define the exact build and test scope, not only the vehicle application.
Minimum specification points to confirm:
Core construction: tubular, plate-fin, or stacked-plate design
Heat exchanger material: stainless steel grade, usually 304 or 316 series for corrosion resistance
Header and end tank material
Brazing or welding process
Overall length, width, height, and mounting datum positions
Inlet and outlet port diameter and orientation
Coolant-side and exhaust-side pressure limits
Leakage test method and acceptance criteria
Thermal cycling or durability test coverage
Surface treatment and corrosion protection
OE reference or OE 06A107065-style cross-reference only where applicable
A complete drawing package should identify critical-to-fit dimensions with tolerances. For example, flange flatness, stud hole spacing, and port concentricity often determine whether the unit seals correctly in the field. For procurement, the best quotation compares drawing revision, test method, and packing standard as a set, not as separate items.
Typical technical specification table
The table below shows the type of data procurement teams should expect from a credible supplier. Actual values depend on engine family and packaging envelope.
Specification item
Typical requirement
Procurement note
Core material
Stainless steel, corrosion-resistant alloy
Confirm material certificate and grade
Housing material
Stainless steel or aluminium alloy, depending on design
Must match coolant chemistry
Pressure test
1.5x to 2.0x working pressure, method declared
Ask for dry air or water test record
Leakage limit
No visible leakage at test pressure
Acceptance criterion should be stated
Dimensional tolerance
Critical dimensions within drawing tolerance
Require inspection report for first article
Mounting face flatness
Controlled on sealing surfaces
Important for gasket performance
Surface finish
Defined on weld and sealing areas
Reduces crack and corrosion risk
Identification
Batch or lot traceability
Needed for warranty control
Compliance file
IATF 16949:2016, ISO 9001:2015, REACH (EC) No 1907/2006 where relevant
Request certificates and declarations
</tr></thead><tbody> </tbody></table>These figures are not universal standards for every part number. They are the benchmark items a buyer should request before approving samples or releasing production.
Materials, corrosion resistance, and service life
EGR coolers operate in a difficult environment: exhaust gas carries soot and acidic condensate, while the coolant side cycles between cold start and high load. Material selection affects both durability and warranty exposure.
Material choices commonly used
Stainless steel core tubes: suitable for high-temperature exhaust gas and repeated thermal cycling
Stainless steel weld zones: preferred where cracking resistance is important
Corrosion-resistant end caps and housings: support long-term coolant compatibility
Gasket interfaces: must maintain sealing after heat soak and vibration
A buyer should ask whether the design has been validated for coolant chemistry used in the target market, particularly where mixed fleet service is common. For export programmes, documentation should reference REACH (EC) No 1907/2006 where material declarations are required. Where a part will be used in a vehicle family with strict emissions packaging, thermal transfer rate and soot fouling resistance are as important as basic fit.
Service life is usually limited by three failure modes: weld fatigue, internal clogging, and external corrosion. Good specifications reduce risk by controlling wall thickness, weld quality, and pressure stability across the batch.
Validation tests that should appear on the datasheet
A quotation without test data is incomplete for professional sourcing. The validation package should state which tests were performed, the sample size, and the pass criteria.
Common test items include:
Pressure decay or hydrostatic leak test
Flow test on exhaust gas path
Thermal cycling between hot and cold states
Vibration resistance test
Salt spray or corrosion exposure where specified
Dimensional inspection against controlled drawing
Packaging validation for export transit
If the part is used in a regulated emissions application, the buyer should also ask how the cooler fits into the full emission control system. The component itself is not certified alone; the vehicle platform and calibration define compliance. Suppliers should avoid any statement implying vehicle manufacturer approval. Driventus supplies aftermarket parts and can provide validation data aligned with customer requirements, but brand names are referenced for fitment only.
For documentation control, ask for report revision numbers and lot traceability. That makes it easier to compare sample results with pilot production and mass production lots.
How to compare suppliers on a like-for-like basis
When two quotations look similar, the real difference is often in what is missing from the technical file. A disciplined comparison should cover engineering, quality, and logistics together.
Use this checklist:
1. Confirm the drawing revision and OE reference used for quoting. 2. Verify whether critical dimensions are inspected 100% or by sampling. 3. Check whether leak testing is done before or after final assembly. 4. Review material certificates and heat numbers for traceability. 5. Confirm packaging specification for sea freight and warehousing. 6. Compare MOQ, lead time, and sample delivery time. 7. Review the supplier’s quality system, including IATF 16949:2016 and ISO 9001:2015.
If you need broader range coverage, review our catalog and the related engine components page for adjacent product families. Buyers sourcing multiple parts from one factory should also review the quality system to confirm inspection controls, and custom manufacturing when a drawing or packaging change is needed.
A clean comparison sheet should make it possible to choose a supplier without relying on price alone.
What Driventus can support for aftermarket sourcing
Driventus manufactures engine and powertrain components in Taizhou, Zhejiang, for export to more than 60 countries. For EGR cooler programmes, the most useful support is controlled technical communication: dimensional data, batch traceability, and test records that match the agreed drawing.
Typical sourcing support includes:
OE-style cross-reference review for fitment verification
Sample builds for dimensional confirmation
Production documentation with lot identification
Export packaging suitable for distributor and warehouse use
OEM and Tier-1 style process control under IATF 16949:2016 and ISO 9001:2015
Where a customer needs a non-standard flange, port orientation, or packaging configuration, our engineering team can review the change through custom manufacturing. For standard stock items and related parts, the fastest starting point is our catalog.
For any sourcing project, the key question is simple: do the supplied details prove the part will fit, seal, and survive the duty cycle? If not, the specification is incomplete.
Frequently asked questions
At minimum: materials, overall dimensions, mounting points, port sizes, pressure limits, leak-test criteria, and drawing revision. Procurement teams should also request traceability and compliance documents.
No. Core and housing materials vary by design and application. Stainless steel is common for the heat exchanger, but exact grades and end-cap materials depend on temperature, corrosion, and packaging requirements.
Yes, for fitment comparison and aftermarket supply. Driventus is an independent aftermarket manufacturer; brand names are referenced for fitment only. Approval by any vehicle manufacturer is not claimed.
If you need a controlled quotation, drawing review, or sample comparison, please [request a quote](/contact.html). Our team can confirm specification details and next steps.
