Genuine BMW OEM Self-Locking Collar Nut M8 Grade 8 ZNS3 | OEM 31316769731

Ensure secure, vibration-resistant assembly across a wide range of BMW models with the Genuine BMW OEM Self-Locking Collar Nut M8 Grade 8 ZNS3 – Part 31316769731. The nylon or deformed-thread locking feature prevents loosening under vibration and dynamic loads, while the integrated collar provides an increased bearing surface – making this the ideal OEM replacement for chassis, body and drivetrain applications.

Features:

• Genuine BMW OEM part – guaranteed fitment and quality

• M8 thread, grade 8 tensile specification

• Self-locking design resists loosening under vibration

• ZNS3 zinc-nickel coating for superior corrosion resistance

• Collar provides increased load-bearing surface

• Broad compatibility across BMW, MINI and Rolls-Royce models

Why Self-Locking Nuts Matter

In automotive applications, standard nuts can gradually loosen under engine and road vibration. A self-locking collar nut maintains the designed clamping load throughout the service life of the fastened assembly, contributing to structural integrity and safety. Always replace self-locking nuts when re-assembling critical components – they are single-use by design.

Compatibility – BMW, MINI & Rolls-Royce Models

1 Series: E81, E82, E87, E87 LCI, E88
3 Series: E36, E46, E90, E90 LCI, E91, E91 LCI, E92, E92 LCI, E93, E93 LCI
5 Series: E34, E39, E60, E60 LCI, E61, E61 LCI
6 Series: E63, E63 LCI, E64, E64 LCI
7 Series: E32, E38, E65, E66, E67, F01, F02
8 Series: E31, G14 Convertible, M8 F91 Convertible
X1: E84 | X3: E83, E83 LCI | X5: E53
Z4: E85, E86, E89 | Z8: E52
MINI: R50, R53, R56, R56 LCI, R55 Clubman, R55 LCI, R52 Cabrio, R57, R57 LCI, R58 Coupé, R59 Roadster, R60 Countryman, R61 Paceman
Rolls-Royce: Phantom RR1, Phantom Drophead, Phantom Coupé (all series)

If you are unsure of compatibility, please confirm with your VIN or contact our team.

Why Choose Genuine BMW?

• Exact OEM thread specification and self-locking characteristics

• ZNS3 zinc-nickel coating for long-term corrosion resistance

• Grade 8 tensile strength – built to BMW assembly tolerances

• Single-use locking element ensures correct clamping on reassembly

Why Buy from R44 Performance?

R44 Performance is a trusted UK supplier of genuine BMW OEM parts and performance upgrades, serving customers across the UK, Europe, North America and worldwide.

• Genuine BMW OEM parts – 100% authentic

• BMW-specific expertise

• Fast UK dispatch and international delivery

• Dedicated customer support team

Restore factory-standard fastening security with the Genuine BMW Self-Locking Collar Nut M8 ZNS3 – OEM 31316769731, engineered to BMW's exact specification.

Unless explicitly stated otherwise, all products sold by R44 Performance Limited are designated RACE ONLY and are solely for competition or off-road use limited to racing formally sanctioned by a recognized racing organization. Any other use, including recreational off-road use, may violate local, state, and Federal laws. R44 Performance Limited does not implicitly or explicitly confirm the legality of using any products it sells on public roads; that is entirely the responsibility of the consumer.

It is the responsibility of the customer to check with all federal, state local and environmental laws before ordering and installing a product. R44 Performance Limited is not responsible for any fees, fines or costs that a customer may incur as a result of failing to check with federal, state, local or environmental laws before ordering and installing a product.

We get a large number of custom orders and requests everyday, so as a result it is not always possible for us to keep every item in stock at all times in our warehouse. If you require the item urgently please contact our sales team here to check the stock before you make your purchase.

We totally understand if you're not certain a part will be compatible with your car, so we highly recommend contacting us here with your query. Our friendly sales team will then be in touch to confirm if this part is the correct part you are looking for.

All in stock products ship the same day if ordered before 2pm GMT

For out of stock items we will contact you with an estimated wait time if not otherwise specified above.

We offer worldwide shipping on all products. If upon receiving your product you wish to return; we offer a 30-day returns policy. For our in-depth returns information please follow the link. "R44 Returns Policy

All of our products come with a standard warranty of 1-3 years. This is dependant on the type of product however. For more details please see our warranty page here.