Related Products
Suspension Subframe Crossmember - Audi (4N0-399-347-M)
2019-2025 Audi - 4N0-399-347-M
- MSRP: $1,555.84
Review Fitment & Product Details
Details
- Brand:
- SKU:
4N0-399-347-M
- Positions: Front
- Other Names:
Engine Cradle, Cross-Member, Sub Frame
- Description:
A8 Quattro. Code 2mq. S8. This factory Audi Suspension Subframe Crossmember (4N0-399-347-M) carries structural load and defines the mounting geometry that suspension and body panels reference, which is why dimensional accuracy matters more here than cosmetics. It is supplied through the Audi dealer parts network and matches the component installed at the factory. Check the applications list or supply your VIN to confirm this part fits your vehicle.
- Notes: Part has related component that cannot be reused/reinstalled. mount bolt.
- Replaces:
4N0399347J
California Proposition 65
WARNING: Cancer and reproductive harm - www.P65Warnings.ca.gov Pricing is valid online only and may vary in your local store
Vehicle Fitment
Vehicle Fitment
| Year | Make | Model | Body & Trim | Engine & Transmission |
|---|
Key Product Information
Additional Information
| SYMPTOMS | What to look for before replacing this suspension subframe (4N0-399-347-M): misaligned panel gaps, doors that no longer close cleanly, unexplained wind or road noise, visible buckling or corrosion, or an alignment that will not hold specification. Addressing the issue early usually keeps the repair contained to this component. |
| TROUBLESHOOTING | A practical check before condemning 4N0-399-347-M: measure the structure against factory dimensions on a bench or with a laser system before ordering, since a structural repair that starts without measurement rarely ends correctly. Record any stored fault codes before clearing them. |
| INSTALLATION | Correct installation of this suspension subframe (4N0-399-347-M) requires the manufacturer's sectioning, welding, and corrosion protection procedures, and this work belongs with a technician trained in the vehicle's construction method. Torque values differ by model and production date, so consult the factory literature. |
| MAINTENANCE | Keeping 4N0-399-347-M in service means keeping drain paths clear and inspecting for corrosion at seams and underbody areas, especially in regions that salt roads. Consistent service intervals matter more than mileage alone on this system. |
| GENERAL_NOTES | Note for part 4N0-399-347-M: Audi uses mixed material construction including aluminum and high strength steel, and joining methods differ by material, so follow the repair manual for the specific section. Aftermarket equivalents often differ in material and tolerance, which shows up during installation. |
| REPLACEMENTS | Items typically renewed with this suspension subframe (4N0-399-347-M): corrosion protection, seam sealer, and associated fasteners are applied and renewed as part of the same repair. Replacing wear items together restores the assembly to its original condition. |
Features and Benefits
Interchange
Policies
Policies
Product Reviews
Product Reviews
Brand
Audi
Store
AutoNationParts.com
Genuine OEM & Premium Aftermarket Replacement Parts Online
Shop high-quality OEM and aftermarket components online at AutoNationParts.com. We provide reliable replacement parts, factory maintenance essentials, and specialized hardware performance upgrades for nearly every major vehicle make and model on the road.
Currently viewing detailed specifications and pricing for Suspension Subframe Crossmember (SKU: 4N0-399-347-M). You can explore our master catalog of auto parts categories, or jump directly into core high-demand vehicle infrastructure systems below:
- Brake Pads & Brake Systems
- Engine & Cabin Air Filters
- Batteries & Electrical Parts
- Suspension & Steering Components
- Fluids & Maintenance Products
With strategic nationwide distribution hubs, orders for Suspension Subframe Crossmember and related catalog items process immediately and ship out in 1–2 business days. Learn more about our fast domestic delivery windows via our shipping policy.
Verifying Fitment for Suspension Subframe Crossmember
To guarantee 100% complete compatibility before checking out, ensure you cross-reference your vehicle's unique 17-digit VIN (Vehicle Identification Number) or enter your exact manufacturer part number. Because automotive engineering frameworks shift across model years and specific engine packages, confirming your mechanical alignment ensures a flawless installation.
Explore related systems in our database: Brake Parts | Filters | Suspension
OEM Performance vs. Premium Aftermarket Alternatives
Whether you choose an OEM (Original Equipment Manufacturer) part or a trusted third-party alternative, AutoNation Parts ensures that your technical hardware fulfills rigorous road-testing and assembly standards.
- OEM Inventory: Offers exact factory engineering specs, direct electrical or mechanical compatibility, and protects existing manufacturer warranties.
- Aftermarket Options: Provides highly cost-effective, dependable solutions with wider availability across legacy vehicle models.
Browse our complete catalog pathway: OEM Auto Parts Collection | Aftermarket Alternatives
Fast Nationwide Shipping (1–2 Business Days)
We leverage a robust, interconnected network of regional U.S. fulfillment facilities to route your components via the most efficient transport channels, keeping vehicle downtime to an absolute minimum:
- Chicago – Midwest logistics hub
- Atlanta – Southeast distribution network
- Houston – Central regional fulfillment
- Los Angeles – West Coast shipping facility
- Miami – East Coast distribution hub
Learn more: Shipping Information & Logistics Rates
Why Source Your Inventory from AutoNation Parts?
- Extensive OEM and premium aftermarket parts in one centralized marketplace
- Fast nationwide shipping with tracking transparency to reduce project downtime
- Trusted automotive retailer dedicated to component precision and customer support
- Secure encrypted checkout paired with verified real-time active inventory data
- Catalog coverage spanning the majority of vehicle model configurations on the road
Shop AutoNation Parts Online Today
OEM & Aftermarket Auto Parts FAQ | AutoNation Parts
What are OEM auto parts?
OEM auto parts are original equipment components manufactured directly by the vehicle factory or licensed suppliers to match your vehicle’s original assembly specifications for an exact fit and flawless performance.
What are aftermarket auto parts?
Aftermarket auto parts are components produced by independent third-party manufacturers. They serve as highly affordable, readily available replacement options or heavy-duty performance upgrades.
How do I ensure Suspension Subframe Crossmember fits my exact vehicle?
The fastest way to guarantee fitment for SKU 4N0-399-347-M is to use our advanced Search by Vehicle tool to isolate components by your unique 17-digit VIN, or filter results by selecting your year, make, model, and trim level.
Can I apply promotional discounts to routine maintenance orders?
Yes. For qualifying orders of common maintenance components such as engine filters, cabin air filters, ignition spark plugs, or fluids, you can enter promo code MAINT5SAVE at checkout to apply direct tiered savings.
How fast is shipping for auto parts online?
Most in-stock orders process and depart our distribution centers within 1–2 business days. We utilize multiple domestic regional hubs to route shipments via the most efficient paths possible.
Is it safe to buy auto parts online?
Yes. AutoNation Parts integrates secure checkout protocols, strict data encryption, and fully verified real-time warehouse inventory to make sure your online purchasing experience is secure and dependable.