ECS Conical Seat Wheel Bolt - 12x1.5x50mm - Priced Each C17A50-ZNNITT

Conical Seat Wheel Bolt - 12x1.5x50mm - Priced Each

ECS Tuning is proud to offer extended wheel bolts individually or with our spacers that are matched to take the guesswork out of correct fitment. Our bolts are designed to meet ISO 898 class 10.9 mechanical and physical properties. This is a very strict standard that specifies material properties, hardening and tempering requirements, and proof load strength requirements. Furthermore, our fasteners have been lab tested to verify that they meet class 10.9 requirements.

Bolt specifications:
  • Diameter - 12mm
  • Thread Pitch - 1.5mm
  • Length - 50mm

*When installing wheel spacers, add the size of the spacer to the length of the OE wheel bolt for proper fitment (ex. 27mm Length OE Wheel Bolt + 15mm Wheel Spacer = Require a 42mm Length Bolt)

ECS ECS
T#: 371616 | Part#: C17A50-ZNNITT
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4.24
SALE: $4.24 (15% OFF)
WAS: $4.99 on 06-13-2026

This product was last offered at the strikethrough price on
06-13-2026

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Est. Ship Date:
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ECS Conical Seat Wheel Bolt - 12x1.5x50mm - Priced Each C17A50-ZNNITT
Conical Seat Wheel Bolt - 12x1.5x50mm - Priced Each
$4.24

Upgrade your BMW's wheel bolts with ECS Tuning's extended wheel bolts, available individually or paired with our spacers for seamless fitment. Engineered to meet ISO 898 class 10.9 standards, our bolts adhere to strict material properties, hardening, tempering, and proof load strength requirements. Lab-tested for quality assurance, these bolts ensure secure fastening for your BMW's wheels. With a diameter of 12mm, thread pitch of 1.5mm, and a length of 50mm, they provide precise fitment. Note: When using wheel spacers, factor in spacer size to determine the required bolt length for proper fitment.

Benefits:

  • Compatible with BMW models
  • Precision-engineered for secure fastening
  • Meets ISO 898 class 10.9 standards
  • Lab-tested for quality assurance

Prop 65 WarningProp 65 Warning

Cross Reference
  • TWH995150B
  • C17A50-ZNNITT

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Lifetime Replacement

This Product Is Covered By Our Lifetime Replacement Program

Products protected by our Lifetime Replacement Program are covered for as long as you own the product, no need to worry about an expiration date. Purchase your products and enjoy some worry-free motoring, knowing we've got you covered.

If you have any questions, would like to learn more or are ready to place a replacement claim, click here!

MAKE MODEL SUBMODEL ENGINE Special Fitment Notes
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BMW E28 528e M20 2.7L Use vehicle selector to confirm fitment
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BMW E32 735iL M30 3.4L Use vehicle selector to confirm fitment
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BMW E32 740iL M60 4.0L Use vehicle selector to confirm fitment
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BMW E32 750iL M70 5.0L Use vehicle selector to confirm fitment
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*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.

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