Buy BMW X4 Fender

A fender surrounds the wheel well and stops mud, stones, and water from spraying other cars or pedestrians. It also guides airflow around the tire to cut drag, which can boost mileage a little. (Wikipedia)

• F26 (2014-2018) - First X4. Length 4,671 mm, width 1,881 mm, height 1,624 mm. (Carsized.com)
• G02 (2018-present) - Second X4. Length 4,752 mm, width 1,918 mm, height 1,621 mm-bigger yet 50 kg lighter thanks to alloy panels and extra ultra-high-strength steel. (BMW Group PressClub, Boron Extrication)
  BMW launched the original model at the 2014 New York Auto Show and rolled out the lighter G02 in 2018. (YouTube, Wikipedia)

BMW mixes aluminum with press-hardened and high-strength steels in the G02 body-in-white. This trim cuts weight while stiffening the crash cell. (Repairer Driven News, Sime Motors)
Inner liners are plastic to block slush and road salt, while side "air breather" vents on M models are ABS plastic or carbon fiber trim pieces.

Modern X4 fenders fold in planned zones to spread crash energy and help pop-up hoods for pedestrian safety. (Texas Collision Centers)
Keeping the panel intact also protects radar sensors or blind-spot cameras mounted just behind the wheel arch.

Parking scrapes, shopping-cart dents, curb rash, and corrosion around the mounting lip are typical. Steel versions can rust; alloy panels crack instead of denting.

DIY guides show that swapping a "wing" takes roughly 3-5 hours: remove wheel-arch liner screws, unclip the side vent, loosen door-jamb bolts, lift off the panel, test-fit the new part, then torque bolts to spec. (Autodoc Club)
Always disconnect the battery first if the car has side-impact airbags near the fender.

BMW lists paint codes on a sticker in the driver-side door jamb; a quick video shows the exact spot. (YouTube)
Order touch-up or spray paint by code (for example, "B39 Mineral Grey") to avoid mismatch.

• Parts - Aftermarket steel panels start around $300; genuine alloy units run higher. (Jerry)
• Labor - Body-shop labor averages $100 - $200 per hour; removal, fit, paint, and blending take 3-5 hours.
• Totals - Typical replacement $1,000-$1,500; complex repairs on tech-heavy vehicles can top $4,700 as 2024 insurance data shows. (Eli's Collision Repair, WSJ)

1. Support the door to keep gaps even before unbolting the fender.
2. Mark bolt positions with tape for easier alignment.
3. Test-fit the bumper and hood before final paint to ensure uniform gaps.
4. Use anti-seize on steel bolts threading into aluminum.

U.S. federal law requires unobstructed wheel coverage to contain debris; many states enforce specific fender width rules. EU rules focus on pedestrian impact zones that include the fender edge.

• Wing panel (UK), wheel-arch panel, mudguard, side guard, splash guard, front side body panel.

Q: What does a fender do on my BMW X4?
A: It shields the body from mud and stones, guides airflow, and absorbs small impacts. (Wikipedia)

Q: Are F26 and G02 fenders interchangeable?
A: No. Each generation has different shape, size, and mounting points. (Carsized.com, BMW Group PressClub)

Q: Steel or aluminum-how can I tell?
A: A magnet sticks to steel (F26), but not to aluminum sections on many G02 panels. (Boron Extrication)

Q: Do I need to code sensors after replacing a fender?
A: If you disconnect blind-spot or radar modules, a dealer or scan tool must recalibrate them.

Q: Where is the paint code?
A: On the sticker inside the driver-door jamb or in the iDrive menu under "Vehicle information." (YouTube)

Q: How long does a body shop need to swap and paint one panel?
A: About three to five hours, plus overnight drying time. (Autodoc Club, Jerry)

Q: What's the usual cost?
A: Expect $1,000-$1,500 for basic jobs; advanced driver-assist tech can push repairs above $4,700. (WSJ)

Q: Will driving with a damaged fender fail inspection?
A: Rust holes or sharp edges can fail safety checks and may expose wiring or airbags.

Q: Can I reuse the inner wheel-arch liner?
A: Yes, if mounting tabs are sound and it hasn't warped from heat.

Q: Are aftermarket "air-breather" trim pieces purely cosmetic?
A: Mostly; they can vent hot air but are often added for style.

Q: Do wider fender flares improve off-road clearance?
A: They mainly cover bigger tires; they do not raise ground clearance.

Q: How do I stop future rust?
A: Apply cavity wax on seams and touch up paint chips right away.