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Corrosion Testing

Our reputation is galvanized

In laboratory corrosion tests, Mopar_® subjected a Mopar O.E. fender to the same 12-week cyclical corrosion test as an aftermarket fender. The results were staggering. Both fenders were scratched and then static salt sprays were applied three times per week to simulate five years of exposure to the snow, humidity and salt fog. Twelve weeks of testing under these extreme conditions is the equivalent of five years of real-world elemental damage.

MOPAR FENDER

Material - Galvanized steel
Pretreatment Coating - Zinc phosphate
Primer - High bake electro deposition

AFTERMARKET FENDER

Material - Cold rolled steel
Pretreatment Coating - None
Primer - Refinish primer

THE RESULTS

MOPAR FENDER

Minimal corrosion creepback
No rust through

AFTERMARKET FENDER

Excessive corrosion creepback
Long corrosion run-out
Deterioration at panel edges

Performance You Can Trust

Mopar_® Collision Parts always outperform the aftermarket for fit, finish and performance. Only authentic Mopar parts are made to propriety standards, using the best materials and manufacturing processes, to guarantee the right fit the first time. In side-by-side testing, Mopar fenders outperfromed aftermarket fenders in the following: corrosion testing, dimensional accuracy testing and packaging comparisons.

Dimensional Testing

DIMENSIONAL ACCURACY TESTING OF AFTERMARKET FENDER

Mopar_® subjected two aftermarket fenders to dimensional testing, comparing them to Mopar design specifications. The aftermarket fenders were measured by a Coordinate Measuring Machine (CMM) using a touch probe, taking three-dimensional measurements at key points. Next, they were subjected to ATOS white light scans, which showed deviations from FCA US LLC design specifications as indicated by color. Green is optimal, dark blue areas are lower than spec, dark red areas are higher than spec. With the high degree of deviation shown, these aftermarket fenders would require extensive adjustment for an acceptable appearance, proper fit and finish.

MOPAR FENDER

The Mopar Fender over 100+ days after testing completion

AFTERMARKET FENDER

The Aftermarket Fender over 100+ days after testing completion

Failure To Fit

AFTERMARKET DIMENSIONAL INACCURACY – WHITE LIGHT SCAN

AFTERMARKET FENDER A

Dimensional standards failed at 33 of 60 points checked – a 56% Failure Rate:

Upper Fender Attachment – Poor fit requiring adjustments
Upper Half of Fender Low Spots – Poor appearance
Upper Mounting Hole – Poor fender to door fit - potential wind noise
Attachment Tab High – Poor fit requiring adjustments to fit fascia

Dimensional Inaccuracy-AFTERMARKET FENDER A

AFTERMARKET FENDER B

Dimensional standards failed at 35 of 60 points checked – a 58% Failure Rate:

Upper Fender Attachment – Poor fit requiring adjustments
Upper Half of Fender Low Spots – Poor/wavy appearance
Catwalk (Upper Edge) – Poor hood to fender fit
Upper Mounting Hole – Poor fender to door fit - potential wind noise
Attachment Tab High – Poor fit requiring adjustments to fit fascia

Dimensional Inaccuracy-AFTERMARKET FENDER B

Packed To perform

Here’s our wrap on packaging

Mopar_® packaging specifications require parts to be secure and completely protected to ensure the dimensional accuracy of every part.

Even if the aftermarket fender offered accurate dimensions, which reverse engineering and substandard materials and processes won’t allow, aftermarket packaging is not designed to adequately protect the part during shipping and delivery.

The results are clear. Only authentic Mopar Collision Parts offer factory engineered fit, finish and performance in every part we sell. Always get the Mopar Difference. Ask for Protection you can trust – Mopar.

Save time, money and your reputation: Insist on authentic Mopar sheet metal parts.