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Bilstein B12 Matched Suspension Kit – Audi / SEAT applications – 46-259851

£1,186.80 Incl. VAT

Bilstein B12 matched suspension kit, part 46-259851. Lowering varies by vehicle and original suspension; see the application table. Check chassis, axle ratings and fitment conditions before ordering.

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SKU: 46-259851 Categories: , , Tags: , ,
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Bilstein B12 part 46-259851 is listed for the vehicle variants in the application table below. Match your chassis, engine, factory suspension and axle ratings to the relevant row before ordering.

B12 supplies a matched spring-and-damper suspension package. It is a fixed-lowering kit; the amount of lowering depends on the vehicle application and original suspension.

Application and lowering table

AUDI A3 (8V1, 8VK)

1.8 TFSI, 2.0 TFSI, 1.6 TDI, 2.0 TDI 04/12–08/16 77–140kW

  • Front lowering: 45 mm
  • Rear lowering: 35 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect AMM; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 35 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

AUDI A3 Sportback (8VA, 8VF)

1.8 TFSI, 1.6 TDI, 2.0 TDI 09/12– 77–135kW

  • Front lowering: 45 mm
  • Rear lowering: 35 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect AMM; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 35 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

AUDI A3 Limousine (8VS, 8VM)

1.8 TFSI, 1.6 TDI, 2.0 TDI 05/13– 77–135kW

  • Front lowering: 45 mm
  • Rear lowering: 35 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect AMM; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 35 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

AUDI (FAW) A3 Limousine (85S, 85M)

40 TFSI 01/15– 132kW

  • Front lowering: 45 mm
  • Rear lowering: 35 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect DCC; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; Outer diameter [mm] 50 mm; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 35 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

SEAT LEON (5F1)

1.8 TSI, 1.6 TDI, 2.0 TDI 09/12– 66–135kW

  • Front lowering: 45 mm
  • Rear lowering: 35 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect DCC; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 35 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

SEAT LEON (5F1)

2.0 Cupra, 2.0 Cupra R 10/13– 195– 228kW

  • Front lowering: 25 mm
  • Rear lowering: 15 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect DCC; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 25 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 15 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

SEAT LEON SC (5F5)

1.8 TSI, 1.6 TDI, 2.0 TDI 02/13–08/18 66–135kW

  • Front lowering: 45 mm
  • Rear lowering: 40 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect DCC; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; Outer diameter [mm] 50 mm; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 40 mm; Axle load [kg] to 1000 kg; Multilink Axle; for PR number: 0N4

SEAT LEON SC (5F5)

2.0 Cupra 10/13–08/18 195– 221kW

  • Front lowering: 25 mm
  • Rear lowering: 20 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect DCC; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 25 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 20 mm; Axle load [kg] to 1000 kg; Multilink Axle; for PR number: 0N4

SEAT LEON ST (5F8)

1.8 TSI, 2.0 Cupra, 2.0 TSI, 1.6 TDI, 2.0 TDI 08/13– 66–221kW

  • Front lowering: 45 mm
  • Rear lowering: 40 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect DCC; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 40 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

SEAT LEON Box Body / Hatchback (5F1)

2.0 Cupra 09/15–10/16 213– 221kW

  • Front lowering: 45 mm
  • Rear lowering: 40 mm

Fitment conditions and axle ratings: without electronic suspension control; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 40 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

SEAT LEON Box Body / Hatchback (5F1)

1.6 TDI, 2.0 TDI 09/12–10/16 66–135kW

  • Front lowering: 45 mm
  • Rear lowering: 40 mm

Fitment conditions and axle ratings: without electronic suspension control; disconect DCC; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; Outer diameter [mm] 50 mm; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 40 mm; Axle load [kg] to 1000 kg; Multilink Axle; for PR number: 0N4

SEAT LEON ST Box Body/Estate (5F8)

2.0 Cupra, 2.0 Cupra 4Drive 10/13– 206– 221kW

  • Front lowering: 45 mm
  • Rear lowering: 40 mm

Fitment conditions and axle ratings: without electronic suspension control; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 40 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

SEAT LEON ST Box Body/Estate (5F8)

1.6 TDI, 2.0 TDI, 2.0 TDI 4Drive 04/13– 81–135kW

  • Front lowering: 45 mm
  • Rear lowering: 40 mm

Fitment conditions and axle ratings: without electronic suspension control; Strut outside diameter [mm] 50mm FA: Lowering ca. [mm]: 45 mm; Axle load [kg] to 1070 kg; for PR number: G01; for PR number: G02 RA: Lowering ca. [mm]: 40 mm; Axle load [kg] to 1010 kg; Multilink Axle; for PR number: 0N4

*Approximate lowering relative to the original suspension specified in the relevant row. Factory sports suspension, axle load and vehicle equipment can change the resulting drop. When several rows apply to the same model, their conditions distinguish the permitted configuration; do not select a range by model name alone.

Before ordering

  • Check the exact manufacturer part number: 46-259851.
  • Check the permitted axle ratings on the vehicle identification plate wherever a limit is listed.
  • Confirm electronic damping, drivetrain and original sports-suspension options against the table.
  • Check any additional parts, exclusions and certificate conditions in the application notes.

Installation and adjustment

Follow the installation instructions and approval document supplied for this part number. Keep any adjustable spring seats within the specified range. Have wheel alignment checked after fitting and check affected headlamp or driver-assistance settings in accordance with the vehicle manufacturer’s instructions.

Ordering from GSM Performance

This part is ordered from our supplier. Contact us for the current lead time, particularly if you need it for a planned installation or event. Send your registration or VIN and original suspension details if you would like us to check the application.

Additional information

Weight 20 kg
Brand

Series

Vehicle Manufacturer

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Vehicle Model

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Ride Height Adjustment

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Lead Time

Contact us for current lead time
Manufacturer Part Number

46-259851

Ordered from supplier. Contact GSM Performance for the current lead time.

Will this fit my car?
This listing is for the Audi / SEAT applications listed in the description. Chassis code, model year, engine and drivetrain all matter, and Bilstein often use different part numbers for cars that look the same, so check your car against the vehicle table in the description. If anything is unclear, send us your registration or VIN and we will check it before you order.

How much lower will it sit?
About 25 mm at the front and 15 mm at the rear. That is the catalogue figure: the real drop varies with the car's original suspension and equipment, and a car already on factory sports or lowered suspension drops less.

Do I need new dampers?
No. The B12 is Bilstein dampers with matched springs, front and rear.

Can I adjust the height later?
No, it is a fixed drop. If you want to set the height yourself, you need a height adjustable coilover instead. Our guide Bilstein B12, B14 or B16: Which Suspension Adjustment Do You Need? explains the difference.

Can I fit it myself?
Our guide Fitting Coilovers At Home Or Having Them Done covers what the job involves. Either way, have the wheel alignment checked after fitting.

How long does it take?
This kit is ordered in from the supplier for your car. Ask us for the current lead time before you book the fitting.

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Guides and advice

GuideBilstein B12, B14 or B16: Which Suspension Adjustment Do You Need?
GuideFitting Coilovers At Home Or Having Them Done
GuideWhat Kit Do You Need For Your First Track Day?
GuideHillclimb and sprint racewear requirements for 2026

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