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7/16" Flat Washers | ARP

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PART NO: 200-8530

ARP 7/16" ID Flat Washers - ARP 200-8530 | A Series

£13.08 incl.VAT

£10.90

ARP 7/16" ID Flat Washers - ARP 200-8530 | A Series

ARP Flat Washers suitable for A Series Main Cap using ARP Main Cap Bolts.

 

Tired of unreliable center main straps? ARP 7/16" ID Chamfer Washers (ARP 200-8530) offer a smarter, stronger solution for reinforcing the main caps on A-series 3-bearing crankshafts.

 

🔧 Why Center Main Straps Fail

In the 1960s, center main straps became popular when tuners pushed A-series engines to higher RPMs. But these straps aren't the perfect solution:

  • The 3-main bearing crank wasn’t built for sustained high RPMs
  • Main cap bolt heads often dig into the cap surface
  • This leads to reduced clamping force and eventual cap movement
  • Cap movement causes crank instability and potential catastrophic failure

 

 

🛡️ The ARP Solution: Precision Hardened Washers

ARP’s 7/16" ID chamfer washers are:

  • Made from hardened chrome moly steel

  • Finished in durable black oxide

  • Designed to distribute clamping force evenly

  • Built to prevent bolt head gouging into caps

  • A cost-effective and mechanically sound alternative to main straps

 

 

⚙️ARP Flat Washer - Technical Specification

Dimensions:

  • Inner Diameter (ID): 0.438" (11.11mm)
  • Outer Diameter (OD): 0.812" (20.62mm)
  • Thickness: 0.120" (3.05mm)
  • Chamfer: No

 

Properties:

  • Hardened: Yes
  • Material: Premium Chrome Moly
  • Finish: Black Oxide

 

Application:

  • Ideal for A Series & other applications

 

Package Quantity:

  • Sold in sets of: 10 washers

 

✅Additional Notes:

  • Perfect for race, high performance & street automotive applications
  • Known for exceptional durability and high load capacity
  • Affordable upgrade

 

What's included in the package?

  • ARP 7/16" ID Flat Washers - ARP 200-8530 | A Series - Pack of 10

 

Additional Information

We're here to help!

If you have a question about fitment, please get in touch with our expert team for guidance and support.

 

 

Can't find what you're looking for? Get in touch! We would love to hear from you.

  • Thank you for shopping with us at Damico Engines Limited. We strive to provide you with high-quality car parts and exceptional customer service. However, we understand that sometimes returns are necessary.

    Please review our returns policy below:

    1. Eligibility for Returns:

    • Items must be returned within 30 days of the delivery date.

    • Items must be unused, undamaged, and in their original packaging.

    • Electrical components and special order items are not eligible for return unless they are defective or damaged upon arrival.

    2. Initiate a Return:

    • To initiate a return, please contact our customer service team at info@damico-engines.co.uk or by calling us on +44(0)1953 717 784.

    • Provide your order number, the reason for the return, and any relevant details.

    • Our customer service team will provide you with a Return Merchandise Authorization (RMA) number and further instructions on how to proceed with your return.

    3. Return Shipping:

    • Customers are responsible for return shipping costs unless the item received was defective or damaged.

    • We recommend using a trackable shipping method for returns to ensure the safe delivery of your items, we cannot be held responsible for undelivered items.

    • Please ensure that the RMA number provided by our customer service team is clearly marked on the outside of the package.

    4. Inspection and Processing:

    • Once we receive your returned item, our team will inspect it to ensure that it meets our return eligibility criteria.

    • Refunds will be issued within 3-5 business days of receiving and inspecting the returned item.

    • Refunds will be issued to the original payment method used for the purchase.

    5. Exchanges:

    • If you would like to exchange an item for a different size, color, or model, please contact our customer service team to arrange the exchange.

    • Exchanges are subject to availability. If the desired item is not available, a refund will be issued following our standard return process.

    6. Damaged or Defective Items:

    • If you receive a damaged or defective item, please contact our customer service team within 3 days of receipt to arrange for a replacement or refund.

    • Please provide photos of the damaged or defective item to expedite the resolution process.

    Damico Engines Limited shall not be held liable for any labour charges associated with the installation or removal of parts deemed to be faulty or incorrectly supplied.

    8. Final Sale Items:

    • Certain items may be marked as final sale and are not eligible for return or exchange unless they are defective or damaged upon arrival. These items will be clearly indicated on our website.

    9. Contact Us:

    By completing a purchase on our website, you agree to abide by the terms and conditions outlined in this returns policy.

    Damico Engines Limited reserves the right to update or modify this returns policy at any time without prior notice. Please refer to our website for the most up-to-date information regarding returns.

    Thank you for choosing Damico Engines Limited for your car parts needs! We appreciate your business.

    Sincerely,

    Damico Engines Team

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ARP 7/16" ID Flat Washers - ARP 200-8530 | A Series
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