DAYCO AUTOMATIC BELT TENSIONER FOR HOLDEN MONARO V2 L67 SUPERCHARGED 3.8L V6

$145.00

Dayco’s automatic belt tensioner maintains proper belt tension throughout the belt drive by incorporating an automatic, spring-loaded tensioner into the drive system geometry. It features a patented “flat spring” design that’s engineered to provide less operating range variations in tension. This reduces the risk of premature accessory bearing failure due to high tension when a new belt is installed. It also lessens the risk of belt squeal and slippage, or poor accessory performance caused by low tension after the belt begins to stretch and wear. A Teflon strip wound within the spring resists abrasion. The flat spring itself is coated to resist rust.


Other superior design features include:

  • A heavy-duty cast aluminium spring case resists cracking and fatigue.
  • A heavy-duty cast aluminium arm offers additional strength and less distortion.
  • An aluminium retainer ring locks the spring case and arm together, and seals against corrosion.
  • A thermoplastic rubber “spring slot plug” keeps out harmful contaminants.
  • The lubricated nylon “pivot tube bushing” and “spring bushing” promote quieter performance.
  • A rubber “O” ring seals against dust and grime.
  • The zinc coated mounting bolt resists rust, and is concentric for a more even degree of constant tension.


In order to meet OEM performance standards, this Dayco automatic tensioner comes with a steel pulley that features a dust cover to protect against contaminants.

Vehicle Fitment Guide



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Returns Policy

At Mace Engineering Group, we take great care in packaging of your products appropriately to ensure that they arrive in perfect condition. If for any reason your product is damaged during shipment, please contact us immediately to arrange for the return of your product(s) within 14 days. We will then provide you with a replacement product as soon as possible.

If you receive a product with manufacturing defect, it must be returned within 14 days. After appropriate testing, if it is found that the defect is due to misuse, willful damage, unauthorized repair or tampering with the product by the customer, return will not be accepted by Mace Engineering Group. Strictly no returns/refunds will be given due to buyer's change of mind or remorse. This is in compliance to the ACCC warranties and refunds.

Re-Stocking Fee & Refunds

If a purchased item is returned due to buyer's remorse or misorder, 10-15% re-stocking fee will be applicable at our discretion, depending on the item.

Paypal has changed its refund policy and will no longer refund the fees deducted for the original transaction, therefore, Mace Engineering Group will deduct the 2% fee while making a partial or full refund other than the restocking fee, if applicable

Postage cost is non-refundable.

Domestic Orders

      • Orders typically take 1-2 business days to prepare and process prior to dispatch.
      • Freight may take 1-7 business days from the date of dispatch to delivery within Australia.
      • Orders can also be picked up directly from us on business days. Please email us.
      • Orders are neither dispatched nor delivered on weekends.

International Orders

      • Shipping will be calculated automatically based on the delivery address.
      • Orders outside of Australia may take up to 10 days.
      • You will be responsible for any applicable taxes and/or duties and will need to be paid upon delivery.


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Product Warranty

Mace Engineering Group products are covered by a 1 year warranty, unless otherwise specified in the ad or written agreement from Mace Engineering Group.

Terms of Warranty

Customer must return the defective item(s) first, with a full description of the problem. Appropriate tests will be conducted to determine the authenticity of the defects and claims. Once, Mace Engineering Group is satisfied, identical items(s) will be sent out to the customer.

Please ensure proper packaging of the product to prevent any damage while in transit, as goods are at owner's risk.