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Details
| Specification | Value |
|---|---|
| Brand | TRW |
| MPN | df2666 |
| Category | Brake rotor |
| Height [mm] | 46.2 mm |
| Brake Disc Thickness [mm] | 9.9 mm |
| Thread Size | 15.5 |
| Minimum thickness [mm] | 8 mm |
| Outer Diameter [mm] | 245 mm |
| Centering Diameter [mm] | 68 mm |
| Bolt Hole Circle Ø [mm] | 112 mm |
OE/OEM numbers (2)
Search by this OE number to find compatible parts
- AUDI / VW—443 615 601 B
- AUDI—4D0 615 601 A
Where this part fits
Original-fit position for OE 443615601B. The red ring marks where this part installs on the vehicle.
About this product
TRW brake disc (DF2666) is precision-machined from high-grade grey cast iron for uniform heat dissipation and resistance to thermal cracking under heavy braking. Key dimensional data — Height [mm]: 46, Aluminium mm, Brake Disc Type: Steel, Brake Disc Thickness [mm]: Stainless Steel, Stainless Steel mm, Thread Size: EPDM, Rubber — ensures the rotor geometry meets OEM tolerances for run-out, thickness, and parallelism right out of the box. Compatible with AUDI vehicles; the hub-centric bore and bolt-circle pattern match the original specification exactly. Direct replacement for OE references: 0311010200, 0311010205, 08.5775.10, 08577511 and 79 more. TRW rotors are checked for surface hardness and dynamic balance before dispatch, keeping braking distances predictable throughout the service life of the disc. Brake discs generally last 50,000–70,000 miles, though this varies with driving habits, terrain, and pad compound — heavy urban driving or towing shortens disc life considerably. Warning signs of worn discs include visible scoring or lip formation on the friction surface, vibration through the steering wheel under braking, and a persistent grinding noise even with new pads fitted. Disc replacement is an intermediate DIY task; you will need a torque wrench, a breaker bar (some hub-to-disc retaining screws seize over time), and a jack with axle stands — budget 1–2 hours per axle. When selecting brake discs, check that the disc type (vented or solid) matches the original, and look for a protective anti-corrosion coating on the hub and non-friction surfaces to prevent rust jacking. Always replace discs in pairs (both sides of the same axle) to maintain even braking balance, and bed in new discs with the manufacturer's recommended gentle-braking procedure for the first 200 miles. Every part is dispatched from our UK warehouse with a 30-day money-back guarantee and free hassle-free returns.
Brake rotor buying guide
Why replace this part?
Brake discs work together with brake pads to bring your vehicle to a stop. Over time, discs wear down, develop grooves, or can warp from heat. Worn or warped discs reduce braking efficiency and can cause dangerous vibrations at speed.
Signs you need a replacement
- Pulsating brake pedal
- visible grooves or scoring on the disc surface
- vibration during braking
- grinding noise even with new pads
- disc thickness below minimum specification
When to replace
Every 50,000–80,000 miles. Always measure disc thickness during pad changes — most discs have a minimum thickness stamped on the hub.
About TRW
TRW Automotive, with roots dating back to 1901 in Cleveland, USA, is a global leader in safety-critical automotive components, now part of ZF Friedrichshafen. TRW specialises in brake pads, brake discs, steering components, suspension parts, and engine valves. As an OE supplier to virtually all major global car manufacturers, TRW products meet the highest safety and performance standards. Trusted by vehicle makers for over a century, TRW delivers braking and steering components that prioritise safety without compromise.
Suitable cars
Equivalent products (87)
Show all 87 OE numbers
Brake rotor TRW DF2666 — compatible car models
| Car models | AUDI: 100 C3 Avant (445, 446), 100 C3 Saloon (443, 444), 200 C3 Avant (447, 448), 200 C3 Saloon (447, 448), A8 D2 (4D2, 4D8) |
|---|---|
| Engines | 2.2 Cat quattro; 2.3; 2.1 Turbo quattro; 2.5 TDI |
| Year of manufacture | 1982-2005 |
| Manufacturer article number (MPN) | DF2666 |
| OE part numbers | 443 615 601 B, 4D0 615 601 A |
Compatibility check
Loading vehicle data…
Please wait while we load vehicle compatibility information.Description and what's included
TRW df2666 Brake rotor. Bolt Hole Circle Ø [mm]: 112 mm. Brake Disc Thickness [mm]: 9,9 mm. Brake Disc Type: 1. Centering Diameter [mm]: 68 mm. Colour: 7. Height [mm]: 46,2 mm. Minimum thickness [mm]: 8 mm. Number of Holes: 5
- 1x Brake disc
Shipping, returns, warranty
Free UK delivery on orders over £99.00. Express and standard shipping available.
- Standard delivery: 2-5 business days
- Express delivery: 1-2 business days
- Free returns within 14 days
- All parts backed by manufacturer warranty
Warranty: 12-month manufacturer warranty on all parts. 14-day money-back guarantee if the part doesn't fit your vehicle.
Frequently Asked Questions
Is this Brake rotor compatible with my car?
This Brake rotor fits AUDI vehicles. Use the vehicle selector at the top of the page to check exact compatibility — enter your car's make, model, and engine for a confirmed fitment match. All fitment data is verified through TecDoc.
What specifications does this TRW Brake rotor have?
This TRW Brake rotor has the following specifications: Height [mm]: 46,2 mm; Brake Disc Type: 1; Brake Disc Thickness [mm]: 9,9 mm; Thread Size: 15,5; Minimum thickness [mm]: 8 mm; Colour: 7. Check the full specifications table above for complete details.
What OE part numbers does this Brake rotor replace?
This Brake rotor replaces OE part numbers: 443 615 601 B, 4D0 615 601 A. Cross-reference these numbers with your vehicle's original part number to confirm compatibility.
How much does a Brake rotor cost?
This TRW Brake rotor is available for £37.99. Brake rotor prices vary depending on brand, specifications, and vehicle compatibility. TRW parts offer a balance of quality and value, backed by our 14-day money-back guarantee.
How do I know when to replace my Brake rotor?
Watch for pulsating brake pedal, visible grooves or scoring on the disc surface, vibration during braking, or a grinding noise. Brake discs typically last 50,000-80,000 miles but should be measured for minimum thickness during pad changes.
What tools do I need to replace a Brake rotor?
Tools needed: floor jack and axle stands, lug wrench, 7mm hex / Torx caliper bolt socket, pry bar or disc puller, wire brush, brake cleaner, copper grease, torque wrench (wheel bolts to manufacturer spec). Difficulty: Moderate DIY. Safety warning: Do not drive the vehicle until both discs on the same axle are replaced and the brakes have been bedded in. Brake dust may contain harmful particles -- wear a dust mask.
Can I use this part as a replacement for OE 443 615 601 B?
Yes, this TRW Brake rotor is a direct replacement for OE part number 443 615 601 B. It is manufactured to meet or exceed original equipment specifications, ensuring proper fitment and performance. All cross-reference data is verified through TecDoc.
Related categories
Common OE numbers for this part
Common original equipment numbers linked to stocked alternatives.
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