Fitment & Compatibility

Vehicle Fitment: Designed for the 2018 Mercedes-Benz GLC with compatible rear bumper configurations.

Compatible Model:

• 2018 Mercedes-Benz GLC

Style: Upgraded Rear Bumper Diffuser with Round Exhaust Tips

Position: Rear Lower, Left & Right

Product Type: Rear Bumper Diffuser Set

Fitment Type: Performance / Custom

Brand: Castblock

Fitment Note: Rear diffuser compatibility may vary depending on the GLC model, trim level, original rear bumper style, and exhaust configuration. Please compare the product photos with your original rear bumper and verify the exhaust tip layout before purchasing.

Free Compatibility Check: Not sure whether this diffuser fits your GLC? Please send us your VIN and clear photos of your original rear bumper and exhaust area before purchasing. We will help verify compatibility and reduce the risk of ordering the wrong part.

Material & Finish

Material: ABS Plastic

Color: Black

Surface Finish: Unpainted

Made from ABS plastic, this rear bumper diffuser set offers a practical aftermarket styling upgrade for the Mercedes-Benz GLC.

The black, unpainted surface may require additional preparation or finishing depending on your desired appearance. Please refer to the product photos for the actual color and finish.

Included Components

You will receive the diffuser components shown in the product photos.

Package Contents:

• Rear bumper diffuser components as shown in the product photos

• Round exhaust tip components as shown in the product photos

Important Notes:

• What you see is what you get.

• Please carefully review the product photos to confirm the exact number and configuration of included pieces.

• Exhaust tips, mounting hardware, brackets, and other accessories are included only if specifically shown.

• Please contact us before purchasing if you are unsure whether a particular component is included.

Design & Development Philosophy

1. GLC-Specific Styling

Designed as an aftermarket rear-end styling upgrade for the Mercedes-Benz GLC, this diffuser set gives the rear bumper a more distinctive and sporty appearance.

2. Round Exhaust Tip Design

The round exhaust tip styling creates a coordinated appearance with the rear diffuser and enhances the vehicle's rear-end visual presence.

3. ABS Plastic Construction

ABS plastic provides a balance of durability, flexibility, and lightweight construction commonly used for automotive exterior components.

4. Unpainted Surface

The unpainted finish allows for additional preparation or customization to suit your preferred appearance.

5. Coordinated Rear-End Appearance

The diffuser and exhaust tip design work together to create a more integrated aftermarket look. Actual compatibility depends on the original bumper and exhaust configuration.

Installation & Professional Requirements

Professional installation is strongly recommended.

Before painting, cutting, drilling, or permanently installing the diffuser, perform a complete test fit to confirm alignment and compatibility with the original rear bumper.

Important Notes:

• Verify compatibility with your original rear bumper before installation.

• Check the exhaust tip position and clearance carefully.

• Confirm compatibility with the vehicle's original exhaust system.

• Check parking sensor and other rear bumper component positions.

• Minor adjustments, trimming, or modifications may be required depending on the vehicle configuration.

• Do not paint or modify the item before test fitting.

• Professional body shop installation is strongly recommended.

• Installation instructions are not included.

• If you are unsure about fitment, please contact us with your VIN and rear bumper photos before installation.

Delivery & Packaging

Processing time: 1–3 business days.

Delivery time: 7–10 business days via LTL freight.

Liftgate or internal delivery services are not included (extra charge if needed).

Minor scratches during transport may occur; these can be resolved during the painting process.

Please inspect packages immediately upon arrival to report any damage promptly.

Return & Request

We offer a 30-day return policy for eligible items.

If you wish to request a return or exchange, please contact us and our team will assist you with the process.

Return Conditions:

• Item must be unused, unpainted, and in original condition.

• Returns are not accepted for painted or modified items.

• Original packaging is required for all returns.

• Return shipping is not free.