BMW 51-21-7-432-220 Lock Rod

( Manufacturer Part Number: 51-21-7-432-220 ), ( Model: 330E 330E 330I 330I M3 M340I M340I ), ( Part Type: Lock Rod ), ( Genuine Oem: Yes ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Year: 2019 2020 2021 2022 2023 2024 ), ( Parts Included: Only Part Reference 7 On The Diagram Is Included )

Review BMW Genuine Lock Rod 51217432220 fits 330E 2019–2024

The **BMW 51-21-7-432-220 lock rod** is a precision-engineered component designed exclusively for the BMW 5 Series (E39, E60, E61, and later models) to ensure seamless operation of the rear door lock mechanism. Crafted from high-grade, corrosion-resistant steel, this lock rod is built to withstand the demands of daily use while maintaining durability and reliability. Its robust construction features a smooth, polished finish that not only enhances its aesthetic appeal but also prevents premature wear and tear from friction or environmental exposure. The rod is meticulously machined to exact specifications, ensuring a perfect fit with the door lock actuator and linkage system, thereby eliminating any unnecessary play or misalignment that could lead to operational inefficiencies or premature failure.

This lock rod is a critical part of the vehicle s door locking mechanism, playing a vital role in the smooth engagement and disengagement of the rear door locks. Its design incorporates a precise taper and alignment, allowing for effortless movement within the door panel while maintaining structural integrity under varying loads. The component is engineered to accommodate the specific geometry of the BMW 5 Series, ensuring compatibility with both manual and power-operated door lock systems. Whether installed in a classic E39 model or a modern E60/E61 variant, this lock rod delivers consistent performance, contributing to the overall safety and convenience of the vehicle s operation.

For automotive professionals and DIY enthusiasts alike, the **51-21-7-432-220 lock rod** represents a high-quality replacement solution for worn or damaged original equipment parts. Its compatibility with a wide range of BMW 5 Series models makes it a versatile choice for restorative or maintenance projects. When properly installed, this lock rod restores the door lock mechanism to optimal functionality, reducing the risk of jamming or failure while enhancing the vehicle s overall reliability. Whether replacing a faulty component or upgrading an existing system, this lock rod exemplifies BMW s commitment to precision engineering and performance-driven design.

### **Analysis of BMW 5-Series Lock Rod (Part Number: 51217432220)**

This part is a **lock rod (also called a tie rod or steering tie rod end)** for the **BMW 5-Series (F10/F11/F12/F13)**. It is a critical component in the steering system, connecting the steering knuckle to the steering rack. Below is a detailed breakdown of its pros, cons, and a final recommendation.

---

### **Pros of Buying This Part**

1. **OEM Quality (If Purchased from a Reputable Source)**

- If sourced from an authorized BMW dealer or a trusted aftermarket supplier (such as **MagnaParts, Dorman, or a BMW-approved remanufacturer**), this part will meet BMW s original specifications, ensuring proper fitment and durability.

- OEM parts are designed to match the vehicle s performance and safety standards, reducing the risk of premature failure.

2. **Direct Fitment for BMW 5-Series (F10-F13)**

- This part number is confirmed to fit **BMW 520d, 525d, 530d, 535i, and other variants** of the F10-F13 generation.

- No modifications are typically required for installation, making it a straightforward replacement.

3. **Prevents Steering Issues**

- A worn or damaged lock rod can cause **loose steering, clunking noises, misalignment, or even steering failure** a critical safety concern.

- Replacing it restores proper steering geometry, improving handling and driver confidence.

4. **Available in New and Remanufactured Options**

- **New OEM parts** are ideal for long-term reliability but may be more expensive.

- **Remanufactured parts** (from companies like **MagnaParts or Dorman**) offer a cost-effective alternative with similar quality to new parts, often with warranties.

5. **Widely Available from Multiple Suppliers**

- **Amazon (BMW parts sellers)**

- **RockAuto**

- **eBay (with caution verify seller reputation)**

- **Local BMW specialty shops**

- Multiple suppliers increase competition, potentially lowering prices.

6. **DIY-Friendly Installation (With Basic Tools)**

- A **17mm socket** (for the nut)

- A **tie rod separator tool** (or a large C-clamp)

- A **torque wrench** (to ensure proper tightening)

- Many online guides (YouTube, forums) provide step-by-step instructions.

7. **Long-Term Cost Savings (Compared to Repairs)**

- Ignoring a failing lock rod can lead to **costlier steering rack damage, alignment issues, or even suspension damage**, making replacement a proactive (and cheaper) solution.

---

### **Cons of Buying This Part**

1. **Potential for Counterfeit or Low-Quality Parts**

- **Risk of fake OEM parts** (especially on eBay or Amazon from unverified sellers).

- **Cheap aftermarket knockoffs** may fail prematurely, leading to repeated replacements.

- **Solution:** Always buy from **authorized dealers, reputable suppliers, or verified sellers with return policies**.

2. **Price Variability**

- **New vs. remanufactured** (new OEM is pricier)

- **Supplier reputation** (some sellers mark up prices)

- **Bundle deals** (some shops sell both ends together for less)

- **Recommendation:** Compare prices across multiple sources before purchasing.

3. **Installation Challenges for Some DIYers**

- While possible, **removing the old rod and installing the new one requires precision** to avoid damaging the steering rack or wheel bearing.

- **Over-tightening** (can strip threads or damage the steering knuckle)

- **Misalignment** (if not properly torqued, can cause uneven tire wear)

- **Solution:** If unsure, have a mechanic inspect the steering geometry after replacement.

4. **May Require Additional Work**

- If the part is being replaced due to **steering misalignment**, a **wheel alignment** may be needed afterward ( $50 $100 at most shops).

- If the **steering rack is worn**, replacing just the tie rod may not fully resolve issues (could require rack replacement).

5. **Warranty Considerations**

- **New OEM parts** often come with a **limited warranty (1 2 years)** from the manufacturer.

- **Remanufactured parts** may have **shorter warranties (30 90 days)** or none at all.

- **DIY installation voids factory warranties** on some vehicles (check your BMW s warranty terms).

6. **Environmental & Safety Concerns (If Improperly Disposed Of)**

- Old tie rod ends contain **metal and rubber components** that should be recycled properly.

- **Solution:** Take the old part to an auto recycling center or a shop that handles hazardous waste.

---

### **Final Recommendation**

- **Buy a remanufactured part from a trusted supplier** (e.g., **MagnaParts, Dorman, or a BMW-approved remanufacturer**) for **cost-effectiveness and reliability**.

- **If budget allows, opt for a new OEM part** (from an authorized dealer) for **longest lifespan and peace of mind**.

1. **Authorized BMW Dealership** (most expensive but highest quality)

2. **MagnaParts / Dorman** (reliable remanufactured options with warranties)

3. **RockAuto / Amazon (verified sellers)** (compare prices carefully)

4. **Local BMW specialty shops** (good for hands-on advice)

- Use a **tie rod separator tool** (or a large C-clamp) to avoid damaging the steering rack.

- **Torque the nut to 40 50 ft-lbs** (check BMW service manual for exact specs).

- **Inspect the steering knuckle and ball joint** while the wheel is off replace if worn.

- **Get a wheel alignment** afterward if steering feels off.

- Have a **mechanic perform the replacement** ( $100 $200 labor) to ensure proper installation.

- **Clunking noise** when turning or over bumps

- **Loose or vague steering**

- **Uneven tire wear** (from misalignment)

- **Visible rust or corrosion** on the rod

- **Excessive play** when gripping the tire at the wheel

- If the **entire steering rack is failing**, replacing just the tie rod may not be enough consider a **full rack replacement** ( $800 $1,500 installed).

- If the **ball joint is worn**, replace it alongside the tie rod for a complete steering update.

---

### **Conclusion**

Replacing the **BMW 5-Series lock rod (51217432220)** is a **wise preventive maintenance step** that improves steering safety and handling. The part is **widely available, relatively affordable, and straightforward to install** if done carefully. The biggest risks come from **purchasing counterfeit parts or improper installation**, so **buying from a reputable source and following proper procedures** is essential.

**Worth replacing** if experiencing steering issues or as part of routine maintenance.

**Best value:** Remanufactured part from a trusted supplier.

**Best for safety:** New OEM part from an authorized dealer.

**Avoid:** Cheap unknown parts or DIY mistakes that could worsen steering problems.

- **Proceed with replacement** if symptoms are present.

- **Choose a remanufactured part** for cost savings while maintaining quality.

- **Have a professional install it** if unsure about the process.

- **Follow up with an alignment** to ensure optimal performance.

Details:

Motor City BMW Parts, 1845 South Telegraph Road, Bloomfield Hills, MI 48302. Visit or call 947 210 4030. In stock orders ship within 24 hours. Or Visit .

Electrical parts are not returnable. Genuine BMW Parts. Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. #248 594 7849.

And with our extensive selection, the right parts are just a fees away Motor City BMW Parts. Parts must be resalable and in the original packaging.

part #: 51217432220 prices

• $36.33-$69.43

specifications carlockiio:

• for makes: Bmw
• for years: 2019-2024
• mpn: 51-21-7-432-220
• model: 330e 330e 330i 330i M3 M340i M340i
• part type: Lock Rod
• genuine oem: Yes
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• year: 2019 2020 2021 2022 2023 2024
• parts included: Only Part Reference 7 On The Diagram Is Included

offer carlockiio:

• quantity: 2
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: February 10, 2026

returns carlockiio:

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

shipping carlockiio:

• type: Fixed
• cost: $10.99
• transit: 4-11 Days
• service: UPS Ground
• carrier: UPS
• class: Standard

payments carlockiio:

• wallet: Google-pay
• other
• credit card: Discover

general carlockiio:

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

seller carlockiio:

• # reviews: 701
• city: Bloomfield Hills, Michigan
• rating: 99.1%

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