Skip to product information
Engine Under Splash Shield 8W0863822B for 2018-23 Audi A4 A5 S4 S5 RS5 B9

Engine Underbody Splash Shield for 2018–2023 Audi A4/A5/S4/S5/RS5 B9 – 8W0863822B

SKU: NLT1Q00961
$73.99 In Stock
$73.99
Sale price  $73.99 Regular price 
Ships for free in 2–4 business days.
New aftermarket engine underbody splash shield for compatible 2018–2023 Audi B9 A4, A5, S4, S5, and RS5 applications; replaces 8W0863822B.
Estimated delivery between
Shop at Northline Parts Best Customer Service Best Online Parts

Let Northline Parts Do the Heavy Lifting for You!

Not sure which part you need? Our team can help you find the right replacement.

Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT

Live Chat: Available 24/7

I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks

Edward H. — Verified customer

Compatible Models

We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.

Compatible equipment / model
  • 2018–2023 Audi A4 B9—matching engine undertray
  • 2018–2023 Audi A5 B9—matching engine undertray
  • 2018–2023 Audi S4/S5 B9—verify cooling openings
  • 2018–2023 Audi RS5 B9—verify exact underbody configuration

Product Overview

A torn undertray can flap at highway speed, drag after contact with road debris, and leave the lower engine bay exposed. This panel restores the aerodynamic and splash-protection surface beneath the matching B9 chassis.

Audi underbody panels vary with engine, transmission, S/RS equipment, cooling package, and production date. Compare every opening, leading edge, and fastener location.

Key Features & Performance

  • Molded engine underbody shield
  • Restores lower splash and airflow coverage
  • Cross-reference 8W0863822B
  • Fits the matching B9 mounting layout

Replaces Part Numbers

  • 8W0863822B

Common Uses

  • Replacing a dragging or cracked undertray
  • Completing lower-body repair after impact
  • Restoring missing service-panel coverage

Technical Specifications

  • Product Type: Engine underbody splash shield
  • Chassis: Audi B9
  • Placement: Front lower underbody
  • Condition: New
  • Replacement Type: Aftermarket

Installation & Fitment

  • Raise the vehicle at approved lift points
  • Compare openings and edges with neighboring panels
  • Replace missing quarter-turn fasteners and clips
  • Check clearance to exhaust, cooling ducts, steering, and suspension

Compatibility Notice

Northline Parts does its best to list all known compatible models, but the correct part may fit an application not shown.

Engine, body style, S/RS package, cooling equipment, and build date can change the undertray. Match 8W0863822B and the original panel outline.

Frequently Asked Questions

Q: Does it fit every B9 Audi? A: No. Verify the specific engine and underbody panel layout.

Q: Are fasteners included? A: Only hardware shown with the listing should be expected.

Q: Can I drive without the shield? A: The car may move, but missing panels can expose components and disturb intended airflow.

Q: Why did the old shield tear loose? A: Impact, missing fasteners, damaged adjoining panels, or incorrect prior installation are common causes.

Part Summary

keywords: 8W0863822B splash shield, Audi B9 engine undertray, 2018 2023 Audi A4 lower cover, S5 underbody panel replacement, Audi dragging splash guard

Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, dimensions, and application before purchase.

Customers also purchased