Bolt FAQ & New Year Bolt special – fed up of rusty/stuck bolts?

Chris Murray

Active Member
Mar 11, 2005
There seems to be much dissatisfaction with Mercedes oem bolts and locking bolts, so we’ve decided to offer our RAD bolts as a New Year Special!

There seem to be various problems with Mercedes bolts: corrosion issues, sticking bolts, shearing heads.

We specialise in selling only genuine oem wheels, but when it comes to bolts, oem are not good enough, so we buy from a company called RAD in Germany.

RAD bolt/locking bolt specification:
Manufactured to DIN EN ISO 898
Strength Class 10.9
Dacromet 500A coating – 240 hour salt spray test resistance guaranteed
Wheelgun proof - even the locking bolts can withstand 400Nm
Every single bolt is tested and logged on a PACE test machine

Mercedes bolts are zinc plated and last around 20 hours in the ‘salt spray test’, a laboratory test where metal components are sprayed with a corrosive agent and inspected for corrosion at various time intervals. The 20 hours that Mercedes bolts last is roughly equivalent to a year’s use.
The RAD bolts are guaranteed to 240-500 hours, so at least 12 years equivalent.

There are broadly 4 sizes of Mercedes wheelbolt, below are the sizes, art numbers and prices from Mercedes:

1. M12x1.5x21R12
Used for steel, space saver and some of the latest forged wheels on M12 bolted cars
Standard bolt B66470132 Set of 20 RRP £34.87
Locking bolt B66400142

2. M12x1.5x39R12
Used for all genuine Mercedes/AMG alloy wheels on M12 bolted cars
Car codes: 107/124/126/129/168/170/171/201/202/203/208/209/210/414
Standard bolt B66470133 set of 20 RRP £35.67
Locking bolt set B66408233 RRP £51.75

3. M14x1.5x27R14
Used for genuine Mercedes/AMG alloy wheels on the latest Mercedes models
Car codes: 230/211/219/163/164/169/245/221/216/251
Standard bolt (silver) A2114010370 set of 20 RRP £41.83
Standard bolt (black) A1634010670 set of 20 RRP £44.18
Locking bolt set (silver) B66408248 RRP £53.00
Locking bolt set (black) B66408245 RRP £69.11

4. M14x1.5x45R14
Used for genuine Mercedes/AMG alloy wheels on various older M14 bolted models
Car codes: 220/215/140/638/639/460/463
Standard bolt A0009900907 set of 20 RRP £68.82
Standard bolt with extra long drive A1404000570 set of 20 RRP £80.84
Locking bolt set B66408239 RRP £51.75

*All prices taken from, some bolts may be available under different part numbers at different prices, A prefix numbers may have B prefix equivalents

Our offer of replacement RAD bolts
1. M12x1.5x21R12 – zero stock, can order if there is demand

2. M12x1.5x39R12
20 bolts RAD4143 £19 (usual price £40)
16 bolts RAD4143 & locking bolts RAD2145 £35 (usual price £62)
1 set locking bolts RAD2145 £19 (usual price £30)

3. M14x1.5x27R14
20 bolts RAD4227 £25 (usual price £40)
16 bolts RAD4227 & locking bolts RAD2223 £39 (usual price £62)
1 set locking bolts RAD2223 £19 (usual price £30)

4. M14x1.5x45R14
20 bolts RAD4302 £29 (usual price £40)
16 bolts RAD4227 & locking bolts RAD2304 £45 (usual price £62)
1 set locking bolts RAD2304 £25 (usual price £30)

Delivery rates
Bolts & locking bolts (2&3) £8 Special Delivery
Bolts & locking bolts (4) £10 Parceline Next Day
Just locking bolts £5 Special Delivery
Combinations of sets, as many as you like £10 Parceline Next Day

Other notes
1. Other sizes available for special applications, please ask below and I will add them to the list
2. BMW bolts also available
3. Phosphoric acid based wheel cleaners will cause premature rusting of Dacromet coated bolts
4. re-torque all bolts after 200-300 miles running
5. Prices valid until January 15th 2007

Call us to place your order: [removed]
Chris Murray
Alloy Wheels Direct Ltd (formerly Murray Systems)
Last edited by a moderator:

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top Bottom