What Are the Characteristics of the Engine Block,Crankshaft and Piston in N55 six cylinder engine on BMW 335i?

The N55 engine block is a two-piece unit made of die cast aluminum with cast iron cylinder liners and a separate bedplate. The cylinder liner features a groove between each cylinder bore, allowing coolant to flow from one side of the cooling duct to the other. The engine also features a lightweight crankshaft made of cast iron, which is approximately 3 kg (6.6 lbs) lighter than the crankshaft in the N54 engine and is counterweighted asymmetrically. The N55 engine uses KS pistons with a diameter of 82.5 mm (3.25 in). A plain rectangular ring is used for compression. The second piston ring is a taper-faced Napier ring. The oil scrape ring is a steel band ring with spring, also known as the VF system.

Genuine BMW 335i Crankshaft

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BMW 335i Engine Crankshaft
Part Number: 11217580483
$2031.72 MSRP: $2506.44
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Product Specifications
- Other Name: Crankshaft Without Bearing Shells; Crankshaft
- Replaces: 11-21-2-163-665
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2011-2015 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90), Sedan(F30)
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BMW 335i Crankshaft
Part Number: 11217599501
$2031.72 MSRP: $2506.44
You Save: $474.72 (19%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Crankshaft Without Bearing Shells
- Replaces: 11-21-0-415-080
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2007-2010 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90)
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BMW 335i Crankshaft
Part Number: 11217527881
$2031.72 MSRP: $2506.44
You Save: $474.72 (19%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Crankshaft Without Bearing Shells
- Replaces: 11-21-2-155-816
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2007-2010 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90)
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BMW 335i Crankshaft
Part Number: 11212155816
$2031.72 MSRP: $2506.44
You Save: $474.72 (19%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Exchange-Crankshaft With Bearing Shells
- Replaced by: 11217527881
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2007-2010 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90)
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BMW 335i Crankshaft
Part Number: 11210415080
$2031.72 MSRP: $2506.44
You Save: $474.72 (19%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Exchange-Crankshaft With Bearing Shells
- Replaced by: 11217599501
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2007-2010 BMW 335i | Convertible(E93), Coupe(E92), Sedan(E90)

BMW 335i Crankshaft

The BMW 335i Crankshaft is the heart of the engine. It converts the pumping action of the pistons moving up and down into the smooth spinning force that ultimately moves the wheels. Sitting deep in the block, this Crankshaft has offset crank throws where connecting rods are mounted, allowing reciprocating motion to be converted into rotation that leads to the transmission and axles. Across the 335i production run, there are two primary Crankshaft constructions, both of which correspond with engine output. Early and lower-stress versions are based on durable cast iron, an economical choice that will handle standard horsepower demands. High-performance trims of the 335i step up to forged steel, a sturdier Crankshaft style that can withstand greater cylinder pressures without flexing or cracking. For BMW drivers, whichever the material, precision-machined journals run on oil-fed bearings. In order for the journal to prevent knock and vibration, surfaces must be kept from scoring. Since routine service protects the component from grit and oil starvation, many BMW engines last a lifetime with their Crankshaft intact, although serious debris or neglected oil changes can result in some damage that requires a painstaking procedure for repair.

If you are looking for OEM BMW 335i Crankshaft, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW 335i Crankshaft that come backed by the manufacturer's warranty.

BMW 335i Crankshaft Parts Questions & Experts Answers

Engine Crankshaft
11217580483
Q:
What Are the Characteristics of the Engine Block,Crankshaft and Piston in N55 six cylinder engine on BMW 335i?
Posted by Blake Z.
A:
The N55 engine block is a two-piece unit made of die cast aluminum with cast iron cylinder liners and a separate bedplate. The cylinder liner features a groove between each cylinder bore, allowing coolant to flow from one side of the cooling duct to the other. The engine also features a lightweight crankshaft made of cast iron, which is approximately 3 kg (6.6 lbs) lighter than the crankshaft in the N54 engine and is counterweighted asymmetrically. The N55 engine uses KS pistons with a diameter of 82.5 mm (3.25 in). A plain rectangular ring is used for compression. The second piston ring is a taper-faced Napier ring. The oil scrape ring is a steel band ring with spring, also known as the VF system.
Answered by BMW Parts Specialist Noah / Feb 20, 2025