Overhaul Pistons Seals Kit 11:1 For BMW 325i 525i Z4 E90 E60 E89 N52 2.5L Engine-BeeSpareParts

Engine Rebuilding Pistons Gasket Seals Bearings Set For BMW E60 E61 E90 E92 E93 E83 E84 E85 E86 E89

323i 325i 523i 525i X3 Z4 2.5L L6 Naturally aspirated N52B25

 

Compression ratio 11:1

 

Please send VIN number to us before order

 

Pistons & Rings OE#

11 25 7 612 982

11 25 7 561 848

11 25 7 561 844

11 25 7 542 057

 

 

Pistons & Rings Spec

- STD 0.00 spec (no fit cylinder expand)

- Cylinder bore Φ 82.00mm

- Wrist Diameter Φ 20mm

- Wrist Length 46mm

- Ring thickness 1st 1.2mm / 2nd 1.5mm / 3rd 2.0mm

- Compression ratio 11:1

- Fit N52B25 2.5 L6 (2497cc) Naturally aspirated Engine

 

Bearing Shell OE#

11 24 7 576 714

11 24 7 628 034

11 24 7 576 715

11 24 7 576 717

11 24 7 628 035

11 24 7 552 063

11 21 7 627 037

11 21 7 581 009

11 21 7 627 031

11 21 7 627 027

11 21 7 627 033

 

Seals & Gasket Kit OE#

11 12 7 555 310

11 12 7 555 311

11 13 7 548 031

11 12 7 581 215

11 34 0 032 582

11 34 0 034 068

11 12 7 548 799

 

 

Package includes

Pistons & rings x1set

Overhaul gakset x1set

Main & Con rod bearing x1set

Head bolt x1set

 

 

Fit Car Model

 

Brand & Model Produce Year Fit Engine
BMW N52B25 / Compression ratio 11:1
323i (EU&US) 2005-2011 E90 E91
325i / 325xi (EU&US) 2005-2013 E90 E91 E92 E93
523i (EU) 2005-2011 E60 E61 F10 F11
525i / 525xi (EU&US) 2005-2010 E60 E61
X1 xDrive25i (EU&US) 2009-2012 E84
X3 2.5si (EU) 2006-2010 E83
Z4 2.5i / 2.5si (EU) 2004-2008 E85
Z4 sDrive23i (EU&US) 2008-2011 E89

 

Key Features:

  • Direct-fit replacement: No modification required for installation.
  • Stable operation: Ensures consistent performance under standard conditions.
  • Heavy-duty design: Engineered to support reliable service life.
  • Maintenance solution: Practical replacement part for equipment repair.

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Frequently Asked Questions

Q1: How can I be sure this part is compatible with my machine?

We provide compatibility information based on OEM Part Numbers. To ensure a 1:1 fit, please check that your original part number matches the one listed on this page.

Q2: When will my order be shipped?

Most in-stock orders are processed and shipped within 1-3 business days. All parts undergo a strict quality inspection and are protected by heavy-duty packaging (vacuum seals or reinforced crates).

Q3: How long does delivery take to my country?

Estimated delivery times via DHL/FEDEX/UPS:
  • United States: 3 - 10 Business Days
  • European Union: 5 - 12 Business Days
  • Canada / UK / AU: 5 - 15 Business Days
  • Rest of World: 7 - 20 Business Days
Note: Delivery may be affected by weather or customs. In case of significant delays, we will notify you proactively.

Q4: What is the Warranty and Return Policy?

We offer a 6-Month Warranty on our hydraulic components. We also support a 30-day return policy if the part is uninstalled and in its original packaging.

Q5: What should I consider before installation?

We recommend installation by a certified technician. Always ensure the hydraulic system is flushed and filters are replaced before installing new parts to prevent premature failure.

Q6: Need Fitment Verification?

Avoid costly downtime! Send us your Machine Serial Number (VIN) or a photo of your Old Part's Nameplate. Our engineers will verify the fitment for you within 24 hours.

Verify My Part Now →

Why Choose BeeSpareParts?

⚙️

OEM Standard Compatibility

All components are designed to meet original equipment standards, ensuring a reliable fit and proper function as a direct replacement for your machinery.

🔍

Rigorous Quality Inspection

Each part undergoes a series of quality checks before being added to our inventory, minimizing the risk of defects and ensuring steady performance.

🛡️

6-Month Support Warranty

We provide a straightforward 6-month warranty. If any issues arise within the warranty period, our technical team is here to provide efficient solutions.

📦

2-3 Business Day Processing

We prioritize order accuracy. Most in-stock items are processed and dispatched within 2-3 business days with reliable international carriers.

Technical Support

Need help with Part Identification? Contact us at: info@beespareparts.com

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Flexible Payment Options

Shop securely using PayPal, VISA, MasterCard, and other secure payment ways at checkout. Your financial information is encrypted and never stored.

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Easy Return Policy

Received a damaged or incorrect part? No worries. We offer a 30-day return window for unused parts in original packaging. We prioritize your satisfaction.

📸

Real Part Photos

What you see is what you get. Most of our product photos are taken in our own warehouse, reflecting the actual quality of the components.

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Human Expert Support

No chatbots. Talk to real parts specialists via WhatsApp or Email. We provide technical answers, not just automated replies.

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DHL FEDEX UPS 4PX

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