What Are the Characteristics of the Engine Block,Crankshaft and Piston?

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 Piston

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BMW 335i Piston
Part Number: 11257577581
$311.19 MSRP: $403.68
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Product Specifications
- Replaces: 11-25-7-561-698
- 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 Piston
Part Number: 11257577582
$329.03 MSRP: $426.82
You Save: $97.79 (23%)
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Product Specifications
- 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 Piston
Part Number: 11257561698
$311.19 MSRP: $403.68
You Save: $92.49 (23%)
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Product Specifications
- Replaced by: 11257577581
- 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 Piston
Part Number: 11257610295
$311.19 MSRP: $403.68
You Save: $92.49 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- 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 Piston
Part Number: 11258619196
$311.19 MSRP: $403.68
You Save: $92.49 (23%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- 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 Piston
Part Number: 11257584125
Product Specifications
- Replaced by: 11257624409
- 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 Piston
Part Number: 11257624409
Product Specifications
- Replaces: 11-25-7-584-125
- 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)

BMW 335i Piston

The Piston is found in the BMW 335i automobiles, specifically in the internal combustion engines where the work of turning combustive power into the energy required for the mobility of automobiles is done. How it works is through using the gasses expanding to push force through the crankshaft hence enhancing the engines' performance. Usually made of aluminum alloys for rigidity and lightness, it is refined with gas-proof piston rings. In the years of production, many piston types have been used in the 335i among them are the trunk pistons that allow side forces and comes with the oil rings for the purpose of lubrication. Specifically, racing pistons are used to enhance the high-performance PCCI engine since they are lightweight and strong more so when operating under high RPMs. Many of the details in these pistons, such as cooling ducts, are very important for controlling the high pressure and temperature conditions inside the engine, which thus prolongs the life of pistons and improves performance.

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

BMW 335i Piston Parts Questions & Experts Answers

Piston
11-25-7-577-581
Q: What Are the Characteristics of the Engine Block,Crankshaft and Piston?
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.

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