1. Suspension & Steering Vintage Car Truck Parts For Sale
  2. sku: 9403290491754663
  3. MAZDA B39D-34-350A

MAZDA B39D-34-350A Front Left Driver Lower Arm Control Left/driver E054

fits make: Mazda. year: 2010–2013.

B39d-34-350a Mazda 2010-2013 3 Speed Front Left/driver Lower Arm Control E054

( Manufacturer Part Number: B39D-34-350A ), ( Model: 3-SPEED ), ( Part Type: Control Driver Arm ), ( Part Category: Control-arm-lower-fl ), ( Storage Location: 16g-s1-p1 ), ( Fitment Type: Direct Replacement ), ( Genuine Oem: Yes ), ( Placement On Vehicle: Front Left/driver ), ( Part Source: Genuine Oem ), ( Name: Control-arm-lower-front ), ( Ipn: B39d 34 350a ), ( Oe/oem Part Number: F151-34-350b ), ( Manufacturer Warranty: 90 Day )

Review MAZDA Speed Front Left/driver Lower Arm Control fits 2010–2013

The **Mazda B39D-34-350A Front Left/Driver Lower Arm Control (E054)** is a precision-engineered suspension component designed specifically for Mazda vehicles from the 2010 to 2013 model years, including models like the Mazda3 hatchback and sedan. This high-quality lower control arm, often referred to as a "lower ball joint arm" or "lower A-arm," plays a critical role in maintaining proper wheel alignment, steering stability, and overall suspension performance. Crafted from durable, heat-treated steel, this component is built to withstand the demands of daily driving, ensuring reliable handling and a smooth ride even on rough or uneven roads. The E054 designation indicates its exact fitment, guaranteeing compatibility with the front left (driver-side) suspension of compatible Mazda models, where it connects the wheel hub assembly to the vehicle s frame via the ball joint and bushings. Its robust construction minimizes flex and wear, reducing the risk of misalignment or premature failure, which can lead to uneven tire wear, poor steering response, or even handling issues. Whether you're restoring a classic Mazda or upgrading an existing suspension setup, this lower arm control is a vital part of preserving the vehicle s original driving dynamics or enhancing its performance. With its precise engineering and high-quality materials, it s an essential component for maintaining the integrity of your Mazda s suspension system.

### **Pros and Cons of buying a Mazda B39D-34-350A (2010 2013) Front Left/Driver Lower Arm Control (E054)**

#### **Pros:**

1. **Common and Widely Available** This part is a standard suspension component for Mazda vehicles from 2010 to 2013, meaning it is easy to find in stock at auto parts stores, online marketplaces, or directly from Mazda dealers. High availability reduces the risk of long wait times or difficulty sourcing.

2. **Affordable Replacement Option** Compared to OEM (Original Equipment Manufacturer) parts, aftermarket or compatible alternatives are often significantly cheaper while maintaining similar quality. This makes it a cost-effective solution for budget-conscious buyers.

3. **Easy to Install** The B39D-34-350A lower arm is a straightforward bolt-on replacement. Most mechanics or even experienced DIYers can install it with basic tools (socket set, jack, and jack stands). No major modifications or specialized equipment are typically required.

4. **Prevents Further Damage** A failing lower arm can lead to misaligned wheels, uneven tire wear, or even damage to other suspension components (like the ball joint or control arm bushings). Replacing it proactively can save money on more extensive repairs down the line.

5. **Compatibility with Other Mazda Models** This part may also fit other Mazda vehicles from the same era, such as the Mazda3, Mazda6, or Mazda5, depending on the exact model year and trim. This flexibility can be useful if you own multiple Mazda vehicles.

6. **Durability of Aftermarket Options** Many aftermarket brands (e.g., Dorman, Febi Bilstein, or local manufacturers) produce high-quality replicas that match or exceed OEM standards. Some even include upgraded bushings for better longevity.

7. **DIY-Friendly** Since the part is relatively simple, replacing it yourself can save labor costs (typically $80 $150 at a shop). This is appealing for those comfortable with mechanical work.

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#### **Cons:**

1. **Wear and Tear Over Time** Even a new lower arm will eventually wear out, especially if driven on rough roads or if the vehicle has a history of aggressive driving. The bushings (rubber or polyurethane) may degrade faster than expected, requiring replacement sooner than anticipated.

2. **Potential for Counterfeit Parts** Some aftermarket parts, particularly from lesser-known brands or eBay sellers, may be counterfeit or poorly manufactured. Buying from reputable suppliers (e.g., RockAuto, Amazon, or local auto parts stores with return policies) helps mitigate this risk.

3. **Bushing Failure Risk** The lower arm itself may be fine, but the bushings (which allow the arm to pivot smoothly) often fail first. If the bushings are worn, replacing just the arm without addressing them may lead to recurring issues. Some kits include new bushings, but others do not.

4. **Alignment Needed After Replacement** Replacing a lower arm can disrupt the wheel alignment, leading to uneven tire wear or poor handling. A post-installation alignment (typically $50 $100) is recommended but adds to the cost.

5. **Labor Time for DIYers** While the job is manageable, it requires careful disassembly, especially if the arm is rusted or seized. Those unfamiliar with suspension work may struggle with tasks like removing the ball joint or securing the arm properly.

6. **Noise or Vibration Issues** If the bushings are worn or the arm is not properly seated, you may experience clunking noises over bumps or uneven handling. This can be frustrating if the problem persists after replacement.

7. **Limited Lifespan Compared to Other Suspension Parts** Lower arms tend to last 80,000 120,000 miles under normal conditions, though this varies based on driving habits, road conditions, and maintenance. Replacing them as part of routine suspension maintenance is wise.

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### **Conclusion:**

The **Mazda B39D-34-350A (E054) front left lower arm** is a practical and accessible replacement part for Mazda owners dealing with suspension issues. Its **affordability, widespread availability, and ease of installation** make it a strong candidate for DIYers or those looking to avoid costly shop labor. However, buyers should be mindful of **bushing wear, potential counterfeit parts, and the need for post-installation alignment**. If purchasing, opt for a **reputable brand** (e.g., Dorman, Febi, or OEM-equivalent) and consider replacing the bushings simultaneously for long-term reliability.

For those with **mechanical experience**, this is a **cost-effective and manageable repair**. For less confident DIYers, consulting a mechanic for installation may be worth the extra cost to ensure proper fitment and alignment.

### **Recommendation:**

- **Buy from a trusted source** (e.g., RockAuto, Amazon, or a local auto parts store with a return policy) to avoid counterfeit or low-quality parts.

- **Check for bushings** If the existing bushings are worn, replace them at the same time or purchase a **lower arm with new bushings** to extend the part s lifespan.

- **Budget for alignment** After replacement, have the wheels aligned to prevent uneven tire wear and ensure optimal handling.

- **Consider a full suspension inspection** If the lower arm is failing, other components (ball joints, control arm bushings, or struts) may also need attention.

- **DIY if comfortable** If you have basic mechanical skills, replacing the arm yourself saves labor costs. If not, a mechanic can typically complete the job in 1 2 hours.

**Final Verdict:** This part is a **solid, budget-friendly solution** for Mazda suspension issues, provided you source it carefully and address related components (like bushings) to prevent future problems. For most owners, it is a **worthwhile replacement** with minimal downsides if approached correctly.

Details:

2010 - 2013 Mazda 3 Speed Front Left/Driver Lower Arm Control B39D-34-350A, E054, OEM, 2010, 2011, 2012, 2013, Fitment Information: Speed, Part number: Placement on Vehicle: FRONT LEFT/DRIVER, condition: Used item, refer to images for item condition. May have wear and tear, Color: Images: All images are of the actual item. God Bless You.

part #: b39d34350a prices

  • $91.80-$150.11

specifications suspensiosteeri:

  • for makes: Mazda
  • for years: 2010-2013
  • mpn: B39d-34-350a
  • model: 3-speed
  • part type: Control Driver Arm
  • part category: Control-arm-lower-fl
  • storage location: 16g-s1-p1
  • fitment type: Direct Replacement
  • genuine oem: Yes
  • placement on vehicle: Front Left/driver
  • part source: Genuine Oem
  • name: Control-arm-lower-front
  • ipn: B39d 34 350a
  • oe/oem part number: F151-34-350b
  • manufacturer warranty: 90 Day

seller suspensiosteeri:

  • # reviews: 29884
  • rating: 99.7%
  • city: Rancho Cordova, California

returns suspensiosteeri:

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

general suspensiosteeri:

  • condition: Used
  • Car Truck Parts Accessories > Steering Suspension > Control Arms, Ball Joints Assemblies

offer suspensiosteeri:

  • quantity: 1
  • availability: In Stock
  • sold: 0
  • started: June 6, 2026
  • options: Ship-to-home
  • best offers: True

shipping suspensiosteeri:

  • service: FedEx Ground / FedEx Home Delivery
  • type: Fixed
  • carrier: FedEx
  • class: Standard
  • cost: $0.00
  • transit: 4-7 Days

payments suspensiosteeri:

  • wallet: Google-pay
  • credit card: Diners-club
  • other
for makes: mazda, for years: 2010-2013, part type: control driver arm, part category: control-arm-lower-fl, storage location: 16g-s1-p1, fitment type: direct replacement, genuine oem: yes, placement on vehicle: front left/driver, part source: genuine oem, name: control-arm-lower-front, oe/oem part number: f151-34-350b, manufacturer warranty: 90 day,
manufacturer: mazda, category: auto parts > car truck parts accessories > steering suspension > control arms, ball joints assemblies, sku: 9403290491754663,
Mazda B39D-34-350A Is Similar To:
suspensiosteeri logo
5 offers $91.80–$150.11 USD
  • Used. Offer #1 priced at $150.11 + $0.00 shipping estimate = $150.11* total. Images : All images are of the actual item 2010-2013 Mazda 3 Speed.FREE SHIPPING
  • New. Offer #2 priced at $91.80 + $20.00 shipping estimate = $111.80* total. 10 Year Warranty. MAZDA 3 2010-2013.+$20.00 shipping
  • New. Offer #3 priced at $91.80 + $40.00 shipping estimate = $131.80* total. +$40.00 shipping
  • New. Offer #4 priced at $147.23 + $63.35 shipping estimate = $210.58* total. +$63.35 shipping
  • New. Offer #5 priced at $52.25 + $20.00 shipping estimate = $72.25* total. +$20.00 shipping

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