BMW 51-22-7-337-993 Lock Rod

( Manufacturer Part Number: 51-22-7-337-993 ), ( Part Type: Lock Rod ), ( Year: 2016 2017 2018 2019 2020 2021 2022 ), ( Parts Included: Only Part Reference 2 On The Diagram Is Included ), ( Manufacturer Warranty: 1 Year ), ( Fitment Type: Direct Replacement ), ( Genuine Oem: Yes ), ( Placement On Vehicle: Left )

Review BMW Genuine Lock Rod fits 2016–2022

The **BMW 51-22-7-337-993 Lock Rod** is a precision-engineered component designed specifically for BMW vehicles equipped with the **N54, N55, or N57 inline-six engine platforms**, particularly those featuring the **Valvetronic variable intake system**. This high-performance part serves as a critical linkage between the **intake manifold and the throttle body**, ensuring smooth and responsive operation of the Valvetronic actuator while maintaining optimal airflow dynamics. Crafted from durable **high-grade steel**, this lock rod is engineered to withstand the rigorous demands of high-performance driving, offering exceptional resistance to wear, fatigue, and corrosion even under extreme operating conditions. Its meticulously machined surface and precise tolerances guarantee seamless integration with the engine bay s existing components, minimizing friction and maximizing efficiency. The **337-993 designation** confirms its compatibility with select BMW models, including the **F10 5-Series (2010 2017), F11 5-Series (2017 present), F01 3-Series (2011 2017), and F30 3-Series (2011 present)**, as well as certain **M5 and M3 variants**, ensuring a perfect fit for both stock and modified applications. Whether installed in a daily driver or a high-revving performance engine, this lock rod plays a pivotal role in maintaining the integrity of the Valvetronic system, contributing to smoother throttle response, improved fuel efficiency, and enhanced engine longevity. Its straightforward yet vital function underscores its importance in preserving the engine s performance characteristics while adhering to BMW s stringent engineering standards.

### **Pros and Cons of Buying a BMW 51-22-7-337-993 Lock Rod**

#### **Overview**

The **BMW 51-22-7-337-993 lock rod** is a part of the rear suspension system, specifically for certain BMW models (likely E39 5-Series, depending on the year and configuration). This component is responsible for controlling the movement of the rear axle and maintaining proper alignment. Below is a detailed analysis of its pros and cons.

---

### **Pros**

1. **Compatibility with High-Performance Modifications**

- If you plan to modify your BMW with performance upgrades (e.g., lowered suspension, wider tires, or increased weight), a high-quality lock rod like this one can help maintain proper rear axle geometry. Without it, modifications can lead to handling issues, tire wear, or even suspension damage.

2. **Durability and Strength**

- BMW s OEM lock rods are designed to withstand normal driving stresses, including road imperfections, aggressive cornering, and towing. A genuine or high-quality aftermarket replacement ensures structural integrity, reducing the risk of sudden failure.

3. **Prevents Alignment Issues**

- A worn or broken lock rod can cause the rear wheels to misalign, leading to uneven tire wear, poor handling, and increased fuel consumption. Replacing it ensures the rear axle tracks correctly, improving overall vehicle stability.

4. **Compatibility with Aftermarket Suspension Kits**

- Many aftermarket suspension systems (e.g., coilovers, lowering springs, or poly bushings) require precise rear axle control. A properly fitted lock rod ensures these modifications work as intended, enhancing both comfort and performance.

5. **Long-Term Cost Savings**

- Ignoring a failing lock rod can lead to more severe suspension damage (e.g., broken trailing arms, worn bushings, or axle misalignment). Replacing it proactively can prevent costly repairs down the line.

6. **Genuine or High-Quality Aftermarket Options**

- If purchasing an OEM part, you get BMW s engineering standards. High-end aftermarket alternatives (e.g., from brands like **BC Racing, Eibach, or Meyle**) often offer improved materials or performance benefits without sacrificing reliability.

7. **Easy Installation**

- Unlike complex suspension components, lock rods are relatively straightforward to install, especially if you have basic mechanical skills. Many require only basic tools and can be done in under an hour with the right instructions.

8. **Maintains Factory Handling Characteristics**

- For enthusiasts who prioritize driving dynamics, a properly functioning lock rod helps preserve the BMW s original handling feel. Without it, the rear end may feel unstable or unpredictable.

---

### **Cons**

1. **Cost of Replacement**

- **OEM (BMW genuine)**: Typically ranges from **$150 $300 per rod** (some models may require both left and right).

- **Aftermarket (high-quality)**: Can be slightly cheaper (e.g., **$100 $250**) but may lack long-term durability if opting for budget brands.

- If labor costs are included (e.g., at a dealership), the total bill can exceed **$300 $600**.

2. **Potential for Counterfeit Parts**

- The aftermarket is flooded with **fake or low-quality knockoffs**, especially for BMW parts. Purchasing from untrusted sellers can result in premature failure, voiding warranties, or even safety risks. Always buy from reputable suppliers (e.g., **RockAuto, JEGS, or BMW specialty shops**).

3. **Installation Complexity (For Some Models)**

- While generally straightforward, certain BMW models (especially those with **adjustable suspension or complex subframes**) may require **special tools, alignment, or even professional installation**. DIYers should research their specific model before attempting replacement.

4. **Wear and Tear Over Time**

- Like all suspension components, lock rods degrade with mileage, rough roads, or aggressive driving. Even high-quality rods may need replacement every **80,000 120,000 miles**, depending on conditions. Regular inspections are recommended.

5. **Potential for Misalignment After Replacement**

- If not installed correctly or if other suspension components (e.g., bushings, control arms) are worn, replacing just the lock rod may not fully resolve handling issues. A **full alignment** may be necessary afterward.

6. **Limited Availability of OEM Parts**

- For **older BMW models (pre-2010)**, finding genuine OEM lock rods can be difficult, as BMW has phased out some parts. Aftermarket options become the only viable choice, which may not always match OEM quality.

7. **Time-Consuming for DIYers**

- If you re not familiar with suspension work, the process can be **messy and time-consuming**, especially if you need to remove the rear subframe or adjust bushings. Some owners may prefer professional installation to avoid mistakes.

8. **Possible Compatibility Issues with Modified Vehicles**

- If your BMW has undergone **significant modifications** (e.g., lifted suspension, custom drivetrain), a standard lock rod may not fit correctly. Custom or aftermarket rods may be required, adding to cost and complexity.

---

### **Conclusion**

- You notice **rear wheel misalignment, uneven tire wear, or handling issues**.

- You re installing **aftermarket suspension modifications** (lowering springs, coilovers, etc.).

- Your vehicle has **exceeded 100,000 miles** and hasn t had suspension maintenance.

**Pros outweigh cons** for most BMW owners, especially those who prioritize **performance, safety, and longevity**. The **main drawbacks** (cost, potential counterfeit parts, installation difficulty) can be mitigated by:

- **Buying from trusted suppliers** (avoiding fakes).

- **Following proper installation guides** (or seeking professional help if needed).

- **Performing regular suspension inspections** to catch wear early.

---

### **Final Recommendation**

- **Replace it immediately** delaying can lead to worse suspension damage.

- **Choose a high-quality aftermarket part** (e.g., **BC Racing, Meyle, or Eibach**) if OEM is unavailable or too expensive.

- **Have a professional align your wheels** after replacement to ensure optimal performance.

- **Upgrade to a reinforced or aftermarket lock rod** designed for your specific modifications.

- **Consider a full suspension tune-up** (bushings, control arms, etc.) to complement the lock rod replacement.

- **Research your model thoroughly** some BMWs (especially E39 5-Series) have unique subframe designs that require careful attention.

- **Invest in good tools** (torque wrench, alignment equipment) to ensure proper installation.

- **Document the process** many online forums (e.g., **BMW328.net, E39Forum**) have step-by-step guides for your specific year/model.

- **Prioritize quality over price** cheap knockoffs can fail prematurely and void warranties.

- **Check for used/reconditioned parts** (e.g., from **RockAuto s marketplace**) if available.

- **Bundle with other suspension maintenance** (e.g., replace bushings or control arms at the same time) to save on labor costs.

### **Best Choice?**

- **For most owners:** A **high-quality aftermarket lock rod** (e.g., **BC Racing or Meyle**) offers the best balance of **cost, durability, and performance**.

- **For OEM purity:** A **genuine BMW part** (if available) ensures exact fitment but may cost more.

- **For performance builds:** A **custom or reinforced lock rod** (e.g., **Eibach or BC Racing performance line**) is ideal.

**Bottom Line:** Replacing a failing lock rod is a **cost-effective preventive measure** that significantly improves **safety, handling, and longevity** of your BMW. Do not neglect it especially if you drive aggressively or have modified your suspension.

Details:

Shipping Carrier substitutions may be made at our determination in an attempt to reduce shipping cost the customer. We proudly support BMW drivers, independent repair facilities, and DIY enthusiasts throughout the Chicago land area across country. Product Genuine BMW Lock Rod 51-22-7-337-993. Accurate fitment for all BMW model's.

Parts must be resalable and in the original packaging. Electrical parts are not returnable.

part #: 51227337993 prices

• $31.71-$32.93

specifications carlockiio:

• for makes: Bmw
• for years: 2016-2022
• mpn: 51-22-7-337-993
• part type: Lock Rod
• year: 2016 2017 2018 2019 2020 2021 2022
• parts included: Only Part Reference 2 On The Diagram Is Included
• manufacturer warranty: 1 Year
• fitment type: Direct Replacement
• genuine oem: Yes
• placement on vehicle: Left

returns carlockiio:

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

payments carlockiio:

• other
• credit card: Diners-club
• wallet: Google-pay

shipping carlockiio:

• transit: 4-9 Days
• service: Standard
• type: Fixed
• cost: $9.99
• class: Standard

seller carlockiio:

• # reviews: 614
• rating: 99.2%
• city: Elmhurst, Illinois

general carlockiio:

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

offer carlockiio:

• started: May 30, 2026
• sold: 0
• quantity: 3
• availability: In Stock
• options: Ship-to-home

Bmw 51-22-7-337-993 Is Similar To:

• 020171 A Dtusa Rear Left Power Lock Motor Electric Latch Actuator Bmw (22.9% similar) 0IE85 z4 if the box looks damaged, refuse package and immediately. 24 hours support. If you are unsure which parts need, pals. Please at any time. 8IE70 x5 0SIE70 x5 tells us your vehicle information or the oe oem number. 2 high-precision casting, machining and injection, every process under strict ...(June 6th, 2019)
• 06009 87-93 Door 696 Lock Bmw Unit-programa Control Wd Express Fits 851 325i (25% similar) We rarely reject a core. Before sending back a core, you'll need to decide if the core deposit is worth the shipping cost. 8 am to 6 PO. Obviously, the core won't be working well or you wouldn't have replaced it but it can't be smashed, rusted solid, or otherwise unusable. The box helps identify the...(September 20th, 2014)
• Wd 06011 Front 96-98 Lock Vdo Z3 Express Door 945 Fits Bmw Actuator-siemens 076 (19.1% similar) Please for shipping costs as well. Free shipping is for us. Territories, please for shipping costs...(November 23rd, 2014)
• 001 Wd X5 Actuator 06043 00-06 945 Door Bmw Express Motor-genuine Lock Fits (30.6% similar) ...(February 5th, 2015)
• 100-bin2 8408963 00-03 Bmw X5 E53 Silver Left Boot Lid Latch Tailgate Lock Oem (26.3% similar) Works great. Bmw x5 E53 silver left boot lid latch tailgate lock oem. All used parts may show normal wear such as light scratches, scuffs, staining, fading or other minor imperfections. Any bulbs or fuses cannot be guaranteed as well as leds, leds, lights can be tested if asked by the customer. Loc ...(March 20th, 2016)
• 1153410 Bmw Ignition Switch Key Door Lock Trunk Glove Set (32.3% similar) For sale is a perfect working condition bmw E30 lock set...(December 22nd, 2018)
• Door 51 Lock Bracket Bmw 1373185 745 26 Solenoid 1984 Fuel (23.4% similar) Part number 51. Go ahead make a bid I want to sell this item. Buyer pays shipping cost. Came from a turbo car includes bracket and pigtail cut from cars harness. No reserve 1984 bmw 745 E23 fuel door lock motor used good used condition...(September 25th, 2014)
• 1375955 Bmw Rear Left Door Lock Actuator Oem (32.5% similar) If you don't want any surprises - keep in touch with the transporter yourself. It is important that if you are happy with your service and products, leave us a 5 start positive rating. They are often late and can come without a call at any time. For large items engines, doors, etc. 7l RWD mileage: ...(August 6th, 2018)
• 1385115 Bmw Series Trunk Lid Lock Actuator Release Motor Oem (29.2% similar) It is important that if you are happy with your service and products, leave us a 5 start positive rating. If for some reason an item arrives damaged or is not working as described, please directly. Warranty because you are buying used parts, no can be given. You can also day or night...(September 10th, 2018)
• 2005 Bmw X3 Keys Latches Locks Door Lock 181.bm1305 (32.2% similar) Please review the compatibility list above to see if this will fit your car. Zip kit bmw x3 keys latches locks door lock x3 Hollander before buying please review all pictures and make sure this item is a exact match fit for your car. This part is used but still in good working condition. BM1305 ...(May 7th, 2016)
• 325i Bmw Lock Assembly E30 Front M3 318i Locking 1922843 Left Door Latch (18.5% similar) Bmw E30 front left locking assembly door lock latch 325I 318I M3...(February 16th, 2015)