Onix OR1841 Radiator
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Onix

Onix OR1841 Radiator

Brand Onix OR1841
Fits BMW · 34 vehicles

Drop-in fit. Premium-quality radiator line engineered for straightforward replacement.

Designed with top-of-the-line components for longer service life and better performance.

A value-priced radiator from Onix Automotive.

$111.66Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $111.66
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
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BMW Radiator Replacement

The Onix OR1841 radiator is a direct-fit cooling system replacement for select BMW applications. It is built for drivers who need a radiator that matches the original fitment requirements, including models with 21-5/8 in. between tanks.

  • Direct-fit radiator for select BMW 3 Series and Z3 applications
  • Fits vehicles with 21-5/8 in. between tanks
  • Engineered with premium components for improved service life
  • Part number OR1841 for easy identification
  • Compatible with multiple BMW chassis from 1992-2000

Fitment Details

  • Fits 1999-2000 BMW 323ti, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1997-1999 BMW 323i, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1998-1999 BMW 323is, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1996-1999 BMW 328i, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1995-1999 BMW M3, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1996-1998 BMW 328is, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1998 BMW Z3, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1992-1997 BMW 325i, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1992-1995 BMW 320i, N/A, w/ 21-5/8 in. Between Tanks
  • Fits 1992-1995 BMW 325is, N/A, w/ 21-5/8 in. Between Tanks

Product Description

Onix Automotive positions this radiator within its value-focused cooling line, with a drop-in-fit design approach aimed at simplifying replacement on covered BMW models. OR1841 is intended for BMW 323i, 328i, M3, 325i, 320i, 325is, 323is, 328is, 323ti, and Z3 applications that match the listed tank spacing. If you are replacing a worn BMW radiator, OR1841 provides a cataloged fit for these specific vehicles and years.

Common Cooling System Issues

  • Leaking radiator tanks or seams
  • Overheating caused by restricted coolant flow
  • Cracked or aging radiator cores
  • Cooling performance loss from corrosion or contamination
  • Fitment problems when replacing the original BMW radiator

Installation Notes

Verify the vehicle year, model, and the 21-5/8 in. between-tanks measurement before installation. Confirm that the replacement matches the original radiator layout and cooling system configuration on the vehicle. Part number OR1841 should be checked against the existing unit and catalog fitment before ordering.

Quality Assurance

Onix Automotive states that its products are engineered with top-of-the-line components and designed for longer service life and improved performance. OR1841 is part of the brand’s drop-in-fit radiator line for BMW applications.

Related reading

This part fits 34 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelBody TypeLitersCylindersNotes
2000BMW323ti—2.5LL6w/ 21-5/8 in. Between Tanks
1999BMW323iConvertible2.5LL6w/ 21-5/8 in. Between Tanks
1999BMW323is—2.5LL6w/ 21-5/8 in. Between Tanks
1999BMW323ti—2.5LL6w/ 21-5/8 in. Between Tanks
1999BMW328iConvertible2.8LL6w/ 21-5/8 in. Between Tanks
1999BMWM3—3.2LL6w/ 21-5/8 in. Between Tanks
1998BMW323i—2.5LL6w/ 21-5/8 in. Between Tanks
1998BMW323is—2.5LL6w/ 21-5/8 in. Between Tanks
1998BMW328i—2.8LL6w/ 21-5/8 in. Between Tanks
1998BMW328is—2.8LL6w/ 21-5/8 in. Between Tanks
1998BMWM3—3.2LL6w/ 21-5/8 in. Between Tanks
1998BMWZ3—3.2LL6w/ 21-5/8 in. Between Tanks
1997BMW323i—2.5LL6w/ 21-5/8 in. Between Tanks
1997BMW325i—2.5LL6w/ 21-5/8 in. Between Tanks
1997BMW328i—2.8LL6w/ 21-5/8 in. Between Tanks
1997BMW328is—2.8LL6w/ 21-5/8 in. Between Tanks
1997BMWM3—3.2LL6w/ 21-5/8 in. Between Tanks
1996BMW325i—2.5LL6w/ 21-5/8 in. Between Tanks
1996BMW328i—2.8LL6w/ 21-5/8 in. Between Tanks
1996BMW328is—2.8LL6w/ 21-5/8 in. Between Tanks
1996BMWM3—3.2LL6w/ 21-5/8 in. Between Tanks
1995BMW320i—2.0LL6w/ 21-5/8 in. Between Tanks
1995BMW325i—2.5LL6w/ 21-5/8 in. Between Tanks
1995BMW325is—2.5LL6w/ 21-5/8 in. Between Tanks
1995BMWM3—3.0LL6w/ 21-5/8 in. Between Tanks
1994BMW320i—2.0LL6w/ 21-5/8 in. Between Tanks
1994BMW325i—2.5LL6w/ 21-5/8 in. Between Tanks
1994BMW325is—2.5LL6w/ 21-5/8 in. Between Tanks
1993BMW320i—2.0LL6w/ 21-5/8 in. Between Tanks
1993BMW325i—2.5LL6w/ 21-5/8 in. Between Tanks
1993BMW325is—2.5LL6w/ 21-5/8 in. Between Tanks
1992BMW320i—2.0LL6w/ 21-5/8 in. Between Tanks
1992BMW325i—2.5LL6w/ 21-5/8 in. Between Tanks
1992BMW325is—2.5LL6w/ 21-5/8 in. Between Tanks