BMW 51248216812 Trunk Lock Cylinder 8363699

( Manufacturer Part Number: 51248216812 ), ( Country Of Origin: Germany ), ( Remote Controls: Central Locking System, Button Key ), ( Type: Trunk Lock ), ( Ipn: 8363699 ), ( Color: Gray ), ( Material: Aluminum, Stainless Steel ), ( Placement On Vehicle: Rear )

Review BMW Trunk Lock Cylinder Code fits 528I E39 540I 1998

The **BMW E39 540i Trunk Lock Cylinder (Part Number: 51248216812)** is a precision-engineered component designed to ensure seamless and secure operation of the rear hatch mechanism on one of the most iconic and enduring models in BMW s legendary 5 Series lineup. This high-quality replacement cylinder is meticulously crafted to match the exact specifications of the original equipment, delivering reliable performance and a perfect fit for the E39 generation, which spans the years from 1996 to 2003. Engineered with BMW s signature attention to detail, this trunk lock cylinder features a durable, corrosion-resistant construction that withstands the rigors of daily use, from harsh weather conditions to frequent opening and closing cycles. The cylinder operates smoothly within the trunk latch assembly, providing a secure lock and unlock function that is both intuitive and dependable, eliminating the frustration of a jammed or malfunctioning mechanism. Whether replacing a worn-out original component or upgrading after an accident or theft-related damage, this cylinder ensures that the trunk functions with the same precision and quiet efficiency for which BMW vehicles are renowned. Its compatibility extends across various E39 540i models, including both the sedan and wagon variants, making it a versatile solution for restorers, mechanics, and enthusiasts seeking to maintain or restore the integrity of their vehicle s trunk system. With its robust build and compatibility with modern security systems, this part is an essential upgrade for anyone prioritizing both functionality and the timeless reliability that defines BMW engineering.

### **Pros and Cons of Buying a BMW E39 540i Trunk Lock Cylinder (Part Number: 51248216812)**

1. **Authentic Fit and Function** This is an original BMW part, ensuring compatibility with the E39 540i s trunk lock mechanism. Aftermarket parts may not fit as securely or function as reliably.

2. **Reliability** BMW s OEM components are designed to last, reducing the risk of premature failure compared to cheaper alternatives.

3. **Ease of Installation** Since it s a direct replacement, installation is straightforward if you have basic mechanical skills or access to a BMW specialist.

4. **Resale Value** Using genuine parts can help maintain the vehicle s value, especially if you plan to sell or trade it in later.

5. **Warranty Coverage** If purchased from an authorized BMW dealer or a reputable supplier, the part may come with a warranty, providing peace of mind.

6. **Prevents Future Issues** A faulty trunk lock cylinder can lead to more significant problems (e.g., wiring damage, trunk latch failure). Replacing it now avoids potential long-term complications.

1. **Higher Cost** Genuine BMW parts are significantly more expensive than aftermarket alternatives, which can be a financial burden for budget-conscious buyers.

2. **Potential Counterfeit Risks** If purchasing from an untrusted source (e.g., eBay, unlicensed sellers), there s a risk of receiving a counterfeit part that doesn t function correctly.

3. **Limited Availability** Some BMW parts, especially older ones like this cylinder, may be harder to find in stock, requiring longer wait times or special ordering.

4. **Overkill for Minor Issues** If the trunk lock cylinder is only slightly worn or the problem is minor (e.g., a loose wire), replacing the entire cylinder may be unnecessary, making it an expensive fix.

5. **Installation Complexity** While straightforward, some owners may find the job challenging without the right tools (e.g., trim removal tools, wiring harness knowledge).

6. **Environmental Concerns** Purchasing a new part contributes to waste, whereas refurbished or salvaged parts from a wrecking yard could be a more sustainable option.

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### **Conclusion**

The **BMW E39 540i trunk lock cylinder (51248216812)** is a high-quality, reliable replacement part that ensures proper function and longevity. However, its **high cost and potential overkill for minor issues** make it less ideal for budget repairs. If the cylinder is indeed faulty and causing persistent problems (e.g., trunk not latching, electrical issues), the genuine part is the best long-term solution. For those on a tighter budget, **aftermarket parts from reputable brands (e.g., ACDelco, Bosch, or Motul)** can offer a cost-effective alternative with similar performance.

If you re unsure whether the cylinder is the root cause, **diagnosing the issue first** (e.g., checking wiring, testing the lock mechanism) could save money. Additionally, **purchasing from an authorized BMW dealer or a trusted online retailer** (like RockAuto, BMW Parts USA, or eBay with verified sellers) minimizes the risk of counterfeit parts.

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- The trunk lock cylinder is confirmed faulty and causing recurring problems.

- You value authenticity and long-term reliability.

- You re comfortable with the higher cost and have access to proper installation guidance.

- The issue is minor (e.g., a loose wire or slightly worn cylinder).

- You re working on a tight budget and can find a high-quality aftermarket part (e.g., from **ACDelco, Bosch, or Motul**).

- You re confident in diagnosing the exact problem before purchasing.

- **Avoid** buying from untrusted sources to prevent receiving counterfeit or low-quality parts. Always verify the seller s reputation and return policy.

For most owners, **the genuine part is the safest choice**, but weigh the cost against the severity of the issue before deciding. If in doubt, consult a BMW specialist for professional advice.

Details:

part #: 51248216812 prices

• $49.99-$125.00

specifications carlockiio:

• for models: 528i, E39, 540i
• for makes: Bmw
• for years: 1998
• mpn: 51248216812
• country of origin: Germany
• remote controls: Central Locking System, Button Key
• type: Trunk Lock
• ipn: 8363699
• color: Gray
• material: Aluminum, Stainless Steel
• placement on vehicle: Rear

payments carlockiio:

• credit card: Mastercard
• wallet: Paypal
• other

offer carlockiio:

• quantity: 1
• options: Ship-to-home
• sold: 0
• availability: In Stock
• started: February 16, 2026

general carlockiio:

• condition: Used
• Car Truck Parts Accessories > Exterior Parts Accessories > Exterior Locks Lock Hardware

returns carlockiio:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

seller carlockiio:

• rating: 99.5%
• city: Independence, Oregon
• # reviews: 3417

shipping carlockiio:

• cost: $0.00
• class: Expedited
• service: USPS Priority Mail Padded Flat Rate Envelope
• type: Fixed
• transit: 4-8 Days
• carrier: USPS

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