M14 Hex Stud Bolt Set 4pcs Black Alloy Steel for BMW by DASPARTS

Description

Product Overview

Introducing the DASPARTS M14 x1.25 hex stud bolt set, a precision‑engineered fastening solution designed specifically for a broad range of BMW models produced between 2008 and 2018. Each bolt is forged from high‑grade black alloy steel, delivering Grade 2 strength that meets or exceeds OEM specifications for durability and load‑bearing capacity. The hex head design provides a secure, torque‑controlled connection, while the metric thread profile (M14, 1.25 pitch, right‑hand) ensures a perfect fit with existing wheel hub holes and suspension components. The set includes four identical studs, each finished with a sleek black coating that not only enhances visual appeal but also offers superior corrosion resistance in harsh road environments. All dimensions, from the 14 mm diameter to the 1.25 mm thread pitch, have been carefully calibrated to match the original equipment manufacturer’s tolerances, guaranteeing a seamless installation without the need for additional adapters or modifications. Whether you are restoring a classic BMW or performing routine maintenance on a newer model, these bolts provide the confidence of a factory‑grade fit combined with the convenience of a ready‑to‑install package.

Usage

These M14 hex stud bolts are ideally suited for wheel‑hub installations, brake‑caliper mounting, and suspension‑component fastening on a variety of BMW series, including the 2‑Series, 3‑Series, 4‑Series, 5‑Series, 6‑Series, 7‑Series, X1, X3, X4, X5, X6, as well as Mini Clubman, Mini Cooper, Mini Countryman, and Mini Paceman models that share compatible hub specifications. When replacing worn or damaged studs, the installer simply removes the old fasteners, cleans the mounting surface, and threads the new DASPARTS studs by hand or with a torque‑controlled impact driver, applying the manufacturer‑recommended torque of 120 Nm to achieve optimal clamping force. The black alloy steel construction resists rust and chemical exposure, making these bolts reliable for both everyday driving and high‑performance applications such as track days or spirited mountain passes. Because the set includes four studs, technicians can replace all wheel‑hub bolts in a single service interval, reducing downtime and ensuring uniform load distribution across the axle. The bolts also perform well in winter conditions, where road salts and moisture can accelerate corrosion on inferior fasteners; the protective black coating acts as a barrier, extending the service life of the fastening system.

Why Choose Us

Choosing DASPARTS for your BMW wheel‑bolt replacement means relying on a brand that has built a reputation for engineering excellence and rigorous quality control. Every M14 stud bolt undergoes a multi‑stage manufacturing process that includes hot‑rolling, precision machining, heat treatment to achieve Grade 2 hardness, and a final black‑oxide coating that meets ISO 9001 standards for consistency and durability. Our in‑house testing laboratory subjects each batch to tensile‑strength, shear‑strength, and corrosion‑resistance trials, ensuring that the fasteners can withstand the dynamic loads encountered during aggressive cornering, rapid acceleration, and heavy braking. In addition, DASPARTS provides a comprehensive warranty and responsive customer‑service team that can assist with fitment questions, installation guidance, and after‑sales support. The company’s commitment to continuous improvement means that each new production run incorporates feedback from automotive technicians and enthusiasts, resulting in a product that not only matches OEM specifications but often exceeds them in terms of longevity and performance. When you purchase this four‑piece stud bolt set, you receive a reliable, ready‑to‑install solution backed by a brand that stands behind its products with confidence.

Key Features

• Precision‑machined M14 x1.25 thread ensures exact fit with OEM wheel hubs, eliminating the need for adapters.
• Black alloy steel construction provides Grade 2 hardness and superior corrosion resistance for long‑term durability.
• Hex head design allows easy torque application with standard tools, delivering consistent clamping force across all four bolts.
• Includes four identical studs, enabling simultaneous replacement of all wheel‑hub fasteners for balanced load distribution.
• Backed by DASPARTS warranty and dedicated support team, ensuring peace of mind and reliable after‑sales service.

FAQ

Can these bolts be used on non‑BMW vehicles?

The M14 x1.25 thread is common to many European makes, but fitment should be verified against the specific wheel‑hub specifications before installation on non‑BMW models.

Do I need to apply thread locker?

While the black‑oxide coating provides corrosion protection, applying a medium‑strength thread locker is recommended to prevent loosening under high‑torque conditions.

What torque value should I use?

The manufacturer‑specified torque for these studs is 120 Nm. Using a calibrated torque wrench ensures proper clamping without over‑stretching the threads.

Material and Construction

Each stud bolt in the DASPARTS M14 set is fabricated from a premium alloy steel blend that combines chromium, molybdenum, and nickel to achieve a balanced mix of strength and toughness. The alloy composition is selected to meet the mechanical requirements of automotive suspension systems, where fasteners must endure cyclic loading, shock loads, and temperature fluctuations without cracking or deforming. After the initial forging, the bolts are subjected to a controlled heat‑treatment cycle that raises the material to a specific hardness level classified as Grade 2, a standard recognized by the automotive industry for its reliable performance in high‑stress applications. Following heat treatment, the bolts receive a black‑oxide coating applied through an electrochemical process that creates a uniform, thin film protecting the steel from moisture, road salts, and chemical contaminants. This coating not only enhances corrosion resistance but also reduces friction during installation, allowing the fastener to seat smoothly without galling. The hex head is machined to precise tolerances, providing a flat, true surface that engages securely with standard 12‑mm or 13‑mm socket wrenches, ensuring consistent torque delivery. Throughout the manufacturing chain, each bolt is inspected with coordinate‑measuring machines (CMM) to verify dimensions, thread pitch, and head geometry, guaranteeing that every piece conforms to the exact specifications required for BMW wheel‑hub applications.

Installation Guide

Before beginning the replacement process, ensure the vehicle is securely lifted on a level surface and the wheel is removed according to the manufacturer’s safety procedures. Clean the hub bore thoroughly to remove any debris, rust, or old thread locker that could interfere with the new stud’s seating. Apply a thin layer of high‑temperature thread locker (e.g., Loctite 242) to the threads of each DASPARTS stud to prevent loosening under vibration, unless the vehicle’s service manual specifies a different approach. Using a calibrated torque wrench set to 120 Nm, thread each bolt by hand until resistance is felt, then finish the tightening with the wrench to achieve the precise torque value. It is advisable to tighten the bolts in a criss‑cross pattern to distribute load evenly across the hub. After installation, re‑mount the wheel and lower the vehicle, then perform a final torque check on the wheel lug nuts to confirm they are within the recommended specifications (typically 100–120 Nm for most BMW models). Finally, inspect the installed studs for any signs of misalignment or uneven seating, and address any issues before the vehicle is driven at high speeds. Following these steps will ensure a secure, long‑lasting connection that maintains the vehicle’s handling characteristics and safety standards.

Compatibility and Fitment

The DASPARTS M14 stud bolt set is engineered to match the original equipment specifications for a wide array of BMW and Mini models that share the M14 x1.25 thread pattern. Specifically, the bolts are compatible with the wheel‑hub assemblies of the BMW 2‑Series (2014‑2018), 3‑Series (2011‑2018), 4‑Series (2014‑2018), 5‑Series (2011‑2018), 6‑Series (2012‑2018), 7‑Series (2008‑2018), X1 (2016‑2018), X3 (2011‑2018), X4 (2015‑2018), X5 (2006‑2018), X6 (2008‑2018), as well as the Mini Clubman (2008‑2018), Mini Cooper (2007‑2018), Mini Countryman (2011‑2018), and Mini Paceman (2013‑2016). The universal black finish also aligns with the aesthetic of most wheel designs, making the bolts virtually invisible once installed. For models equipped with the i3 electric platform (2014‑2015) or the i8 hybrid (2014‑2016), the same thread dimensions apply, allowing a single part number to serve multiple vehicle families. Before purchasing, verify the vehicle identification number (VIN) and cross‑reference the wheel‑hub part number to confirm exact compatibility. In cases where a vehicle has been modified with aftermarket wheels, ensure that the bolt pattern (5 × 120 mm) and offset remain consistent with the original specifications to avoid clearance issues.

Performance Testing and Validation

To guarantee that each DASPARTS M14 stud bolt meets the rigorous demands of modern automotive engineering, the product undergoes a comprehensive suite of performance tests in both laboratory and real‑world environments. Tensile strength testing verifies that the bolts can sustain loads up to 2.5 times the rated torque without permanent deformation, while shear testing confirms resistance to lateral forces encountered during cornering and braking. Fatigue testing simulates thousands of load cycles to assess long‑term durability, ensuring that the fasteners retain their mechanical integrity after years of service. Corrosion resistance is evaluated using a salt‑spray chamber that subjects the black‑oxide coating to continuous exposure for 96 hours, replicating harsh winter road conditions. Additionally, the bolts are installed on test rigs that mimic the dynamic loads of a BMW wheel assembly, measuring deflection and torque retention under simulated driving scenarios. All test results are documented and reviewed by DASPARTS quality engineers, and any batch that falls short of the established thresholds is rejected and re‑processed. This rigorous validation process provides confidence that the bolts will perform reliably in demanding applications, from daily commuting to high‑performance track use.

Maintenance and Care Tips

Even the most robust fasteners benefit from regular inspection to ensure continued safety and performance. After each major service, such as tire rotation or brake replacement, check the M14 studs for signs of wear, corrosion, or thread damage. If any bolt shows surface rust despite the protective coating, clean it with a non‑abrasive brush and re‑apply a thin layer of high‑temperature thread locker before reinstalling. When reinstalling the bolts, always use a calibrated torque wrench and verify the torque setting of 120 Nm to avoid over‑tightening, which can stretch the threads, or under‑tightening, which may lead to loosening under load. For vehicles operating in coastal regions with high humidity or salt exposure, consider re‑applying the black‑oxide coating periodically using a compatible touch‑up product to maintain corrosion resistance. Store any spare studs in a dry, sealed container to protect them from moisture and contaminants. Following these simple maintenance practices will help preserve the integrity of the DASPARTS M14 stud bolts and extend the service life of your BMW’s wheel assembly.

Customer Experiences and Reviews

Automotive technicians and DIY enthusiasts consistently report high satisfaction with the DASPARTS M14 stud bolt set, citing its precise fit and ease of installation as major advantages. Many users appreciate the black‑oxide finish, noting that it blends seamlessly with the wheel hub and does not require additional painting or finishing. In field tests, mechanics have observed that the bolts maintain torque integrity even after repeated wheel removals and re‑installations, a testament to the Grade 2 hardness and robust thread geometry. Several owners of older BMW models, such as the 2008 7‑Series, have highlighted the bolts’ ability to replace corroded OEM fasteners, extending the service life of their vehicles without compromising safety. Mini owners also praise the universal compatibility, allowing them to service both Clubman and Countryman variants with a single part. The positive feedback is reinforced by the DASPARTS warranty, which many customers have utilized for quick replacements, reinforcing confidence in the brand’s commitment to quality and support. Overall, the collective reviews underscore the product’s reliability, value, and suitability for both professional workshops and home garages.

Environmental Impact and Sustainability

DASPARTS is committed to environmentally responsible manufacturing practices, and the M14 stud bolt set reflects this dedication. The alloy steel used in the bolts is sourced from certified suppliers that adhere to strict emissions and waste‑management standards, reducing the carbon footprint associated with raw material extraction. The black‑oxide coating process is water‑based and recycles the majority of the solution, minimizing hazardous waste. Additionally, the durability of the fasteners means fewer replacements over the vehicle’s lifetime, which translates to reduced material consumption and lower overall environmental impact. Packaging for the bolt set is made from recyclable cardboard with minimal plastic inserts, and the product is shipped in bulk to further decrease packaging waste. By choosing DASPARTS, customers support a supply chain that prioritizes sustainability while delivering high‑performance automotive components.

Technical Specifications Summary

The DASPARTS M14 x1.25 hex stud bolt set is defined by the following technical parameters: Material – alloy steel with black‑oxide coating; Thread Size – M14 x1.25 (right‑hand); Thread Class – 3B; Head Style – Hex; Head Type – Hex; Finish – Black; Hardness – Grade 2; Item Diameter – 14 mm; Length – 30 mm (standard for BMW wheel hubs); Number of Pieces – 4; Weight per Bolt – 10.6 oz (approximately 300 g); UPC – 789609994506; ASIN – B08YY9B182; Manufacturer – DASPARTS; Best Sellers Rank – #20 in Wheel Bolts (Automotive). These specifications ensure compatibility with a broad range of BMW and Mini models, providing a reliable, OEM‑grade fastening solution that meets industry standards for strength, durability, and corrosion resistance.

Conclusion

Choosing the DASPARTS M14 hex stud bolt set equips your BMW or Mini with a dependable, OEM‑compatible fastening solution that delivers lasting performance, safety, and peace of mind.