Bentley Bentayga Mudguard Left 36A821117F

Genuine Bentley Bentayga Front Left Mudguard (Inner Fender Liner)

Part Number: 36A821117F (Often associated with the forward section of the wheelhouse protector)

The 36A821117F is a critical component of the front-left wheelhouse assembly for the Bentley Bentayga (2016–2020). While often referred to in trade as a “mudguard,” it is technically part of the Inner Fender Liner system. It serves as a protective barrier that prevents road debris, water, and salt from entering the sensitive areas of the engine bay and the back side of the front fender.

Product Specifications

• Compatibility: Bentley Bentayga (Pre-facelift models): 2016, 2017, 2018, 2019, 2020.

• Position: Front Left (LHS / Driver Side in RHD, Passenger Side in LHD).

• Section: Forward section (Front portion of the inner wheel arch).

• Material: High-density, impact-resistant thermoplastic or composite felt (depending on the specific sound-deadening trim).

Key Functions

• Aerodynamics: Smooths the airflow within the wheel well to reduce drag and improve fuel efficiency at high speeds.

• Corrosion Protection: Seals off the internal aluminum structure of the fender and chassis from moisture and road salt.

• Acoustic Insulation: Many Bentley liners feature a specialized “felt-like” coating that absorbs tire roar and the sound of gravel hitting the wheel well, maintaining the Bentayga’s quiet cabin.

Related Components

In a front-end repair, the 36A821117F is usually part of a larger assembly. You may also need:

• Rearward Inner Liner Section: 36A821171 (The section that sits behind the wheel).

• Wheel Arch Trim (Flare): 36A853717 (The painted or plastic trim visible on the outside of the car).

• Mounting Hardware: Plastic expanding rivets and Torx screws, which are often damaged during removal.

Signs for Replacement

1. Flapping or Rubbing: If the liner becomes loose, it can rub against the tire, leading to a “whirring” sound and eventual holes in the plastic.

2. Impact Damage: Being made of plastic/composite, these are prone to cracking if you hit deep standing water or large debris at high speeds.

3. Missing Access Panels: These liners often have small “trap doors” for accessing headlight bulbs or fog lights; if these are missing, the entire liner may need replacing to prevent water ingress.

Installation Note

Pro Tip: For the best fit, it is recommended to install this part with the front wheel removed. This allows you to properly align the liner with the bumper and fender mounting points, ensuring the “shut lines” of the car remain factory-perfect.

Fitment Verification

The “F” suffix indicates a specific revision or trim level (e.g., standard vs. models with specialized cooling ducts).