Alpina B3 S (E46)

The Alpina B3 S is a series of high performance compact executive cars manufactured by German automobile manufacturer Alpina from 2002 to 2006 based on the Alpina B3 developed from the BMW 3 Series (E46). The B3 S was available in coupé, saloon, convertible and station wagon body styles. The B3 S was introduced at the 2002 Paris Motor Show.[1]

Alpina B3 S
Overview
ManufacturerAlpina Burkard Bovensiepen GmbH & Co. KG
Production2002–2006
AssemblyGermany: Buchloe
Body and chassis
ClassCompact executive car (D)
Body style
LayoutFront-engine, rear-wheel-drive
RelatedAlpina B3 (E46)
Powertrain
Engine3.4 L E5/1 I6
Transmission
Dimensions
Wheelbase2,720 mm (107.1 in)
Length4,470–4,490 mm (176.0–176.8 in)
Width1,740–1,810 mm (68.5–71.3 in)
Height1,410–1,440 mm (55.5–56.7 in)

Specifications

The engine is a hand-built 3.4-litre E5/1 inline-6 unit, also shared with the Alpina Roadster S.[2] The engine is an enlarged version of the S52B32 engine[3] first installed in the North American M3 (E36).[4] The engine generated a maximum power output of 309 PS (227 kW; 305 hp) at 6,300 rpm and 362 N⋅m (267 lb⋅ft) of torque at 4,800 rpm. The engine has a red-line of 7,300 rpm.[5] Modifications to the engine include an Alpina specific cylinder head, crankshaft and high strength MAHLE pistons.

The B3 S was available with a 5-speed Switch Tronic automatic transmission or a 6-speed manual transmission built by Getrag. Noticeable changes to the interior include Alpina logos and badges, Alpina door sills, and heated sports seats. The comforts options offered by BMW were included as standard in the interior. The exterior changes include a front chin spoiler, 18-inch Alpina alloy wheels wrapped in Michelin Pilot Sport tyres measuring 225/40 R18 on the front and 255/35 R18 on the rear, and "B3 S" badging at the rear. Changes to the suspension system consisted of Alpina specific dampers and Eibach springs with no other major changes.

References
  1. "Alpina B3 S 3.4". Exotic Car Buyer Guide. 8 February 2016. Retrieved 29 August 2020.
  2. "BMW Alpina Roadster S". Alpina Register. 24 May 2007. Retrieved 9 December 2018.
  3. "PARTS CATALOGUE Series E46" (PDF). www.klinika-bmw.pl. Retrieved 10 December 2018.
  4. Meaden, Richard (4 May 2006). "BMW Z4 M v Boxster S v TVR Tuscan v Alpina: M Power Strikes Back". EVO Magazine. Retrieved 9 December 2018.
  5. "Alpina turns heat up on Z4". Autocar. 12 February 2004. Retrieved 9 December 2018.
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