2018 Cadillac CT6 Belt Tensioners

Keep Your 2018 Cadillac CT6 in Top Shape with Quality Belt Tensioners

Whether you’re repairing or upgrading your Belt Tensioner, using high-quality parts is key to keeping your 2018 Cadillac CT6 looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Belt Tensioner Assemblies. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.

Competitive Prices and Extensive Inventory

The average price for a 2018 Cadillac CT6 Belt Tensioner at Advance Auto Parts is around $58.81, with a range that starts at $50.99 and goes up to $73.99. With 3 options in stock from 2 trusted brands, finding the right fit is easy. Popular picks like Accessory Drive Belt Tensioner – Original Equipment Quality, Serpentine Belt Tensioner: 1 Piece, Built To Outperform And Outlast OE Parts, and Tensioner Pulley, Direct Fit, Steel, 65mm Diameter start at just $50.99 and offer a great balance of form and function.

Explore Related Parts

While you’re upgrading or replacing your Belt Tensioner, don’t forget to check out other key components like Oil Cooler Hoses and Serpentine and V Belts. At Advance Auto Parts, we’re here to help you keep your 2018 Cadillac CT6 in peak condition, inside and out.

Essential 2018 Cadillac CT6 Belt Tensioners

Litens – Tensioner Pulley, Direct Fit, Steel, 65mm Diameter (Part No.999667A)

Tensioner Pulley, Direct Fit, Steel, 65mm Diameter

from

$50.99
This Litens supplied tensioner is manufactured to original equipment specifications. This part is specifically designed for GMC/Buick/Cadillac/Chevrolet applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. For maximum performance and durability, always use genuine Litens components. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. Our line is made up of over 900 ADTs, Pulleys, and OADs. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance.
  • Internal “round spring” technology to provide constant belt tension and alignment throughout its service life.
  • Heavy duty steel pulley construction
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
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Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.999847A)

Accessory Drive Belt Tensioner - Original Equipment Quality

from

$70.99
This Litens supplied tensioner is manufactured to original equipment specifications. This part is specifically designed for GM applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. For maximum performance and durability, always use genuine Litens components. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance.
  • Internal “round spring” technology to provide constant belt tension and alignment throughout its service life.
  • Heavy duty steel pulley construction
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
  • Installation instructions included
  • Installation instructions included
See More

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.999622A)

Accessory Drive Belt Tensioner - Original Equipment Quality

from

$63.99
This Litens belt tensioner is supplied by the original equipment (O.E.) tensioner supplier and meets all form, fit, and performance characteristics of the original equipment part . As with the original equipment part, this replacement tensioner is manufactured in Turkey for the GM Applications w/1.4L, Tensioner Assy. This tensioner comes equipped with a heavy duty steel pulley with a 6203 bearing for optimum performance and durability. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Designed and engineered by the Original Equipment supplier of this application.
  • Internal “round spring” technology to provide constant belt tension and alignment throughout its service life. The internal damping design provides quiet, smooth, system performance.
  • Heavy Duty Steel Pulley and Electro-deposited coating for superior corrosion resistance. Pulley specs: 70mm (OD) x 17mm (ID) x 26mm (Width)
  • Accessory drive belts and tensioners are manufactured with similar design life targets. Since belt removal is required to change the tensioner, replacing both will extend the system service life and lower labor costs versus individual replacement.
  • Belt removal is required to change the tensioner. Therefore, doing both together will extend accessory drive life and lower overall labor versus performing these services separately.
  • Installation instructions included
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Dayco – Serpentine Belt Tensioner: 1 Piece, Built To Outperform And Outlast OE Parts (Part No.89703)

Serpentine Belt Tensioner: 1 Piece, Built To Outperform And Outlast OE Parts

from

$73.99
The Dayco automatic belt tensioner features Dayco’s original, patented flat spring design to provide less operating range variation. It reduces the risk of premature accessory bearing failure due to high tension and lessens the risk of belt noise and slippage – or poor performance caused by low tension. A PTFE string wound within the spring resists abrasion and dampens noise. Dayco’s tensioner is also designed with a heavy-duty cast aluminum spring case and arm, which helps resist cracking and fatigue and offers additional strength, lessening the risk of distortion. Additional premium thermoplastic rubber spring slot plugs and rubber O-ring seals help keep contaminants out and zinc coated mounting bolts resist rust.

Product Features:
  • Endures the toughest conditions while promoting quieter performance and longer life
  • Features a steel pivot tube on specific designs for enhanced stability
  • Built to outperform and outlast competitive OE parts
See More

Most Popular Belt Tensioner Assemblies for 2018 Cadillac CT6s

Enhance your 2018 Cadillac CT6 with one of the 3 Belt Tensioner Assemblies we have in stock, starting at just $50.99.

Litens – Accessory Drive Belt Tensioner – Original Equipment Quality (Part No.999847A)

Accessory Drive Belt Tensioner - Original Equipment Quality

from

$70.99
This Litens supplied tensioner is manufactured to original equipment specifications. This part is specifically designed for GM applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. For maximum performance and durability, always use genuine Litens components. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance.
  • Internal “round spring” technology to provide constant belt tension and alignment throughout its service life.
  • Heavy duty steel pulley construction
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
  • Installation instructions included
  • Installation instructions included
See More

Dayco – Serpentine Belt Tensioner: 1 Piece, Built To Outperform And Outlast OE Parts (Part No.89703)

Serpentine Belt Tensioner: 1 Piece, Built To Outperform And Outlast OE Parts

from

$73.99
The Dayco automatic belt tensioner features Dayco’s original, patented flat spring design to provide less operating range variation. It reduces the risk of premature accessory bearing failure due to high tension and lessens the risk of belt noise and slippage – or poor performance caused by low tension. A PTFE string wound within the spring resists abrasion and dampens noise. Dayco’s tensioner is also designed with a heavy-duty cast aluminum spring case and arm, which helps resist cracking and fatigue and offers additional strength, lessening the risk of distortion. Additional premium thermoplastic rubber spring slot plugs and rubber O-ring seals help keep contaminants out and zinc coated mounting bolts resist rust.

Product Features:
  • Endures the toughest conditions while promoting quieter performance and longer life
  • Features a steel pivot tube on specific designs for enhanced stability
  • Built to outperform and outlast competitive OE parts
See More

Litens – Tensioner Pulley, Direct Fit, Steel, 65mm Diameter (Part No.999667A)

Tensioner Pulley, Direct Fit, Steel, 65mm Diameter

from

$50.99
This Litens supplied tensioner is manufactured to original equipment specifications. This part is specifically designed for GMC/Buick/Cadillac/Chevrolet applications. Heavy duty steel pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. For maximum performance and durability, always use genuine Litens components. Litens is the world’s largest supplier of original equipment (O.E.) power transmission products. At Litens, we design systems that are more efficient, resulting in tangible fuel economy/emissions benefits. Litens holds over 2000 patents and continues to respond to the ever-changing automotive industry by investing heavily in new technology, facilities, and people. Our line is made up of over 900 ADTs, Pulleys, and OADs. 90% of our line is made of products coming from the OE manufacturer, which makes the Litens Tensioning Products portfolio the purest OE tensioning line in the North American aftermarket.

Product Features:
  • Manufactured by Litens, the largest original equipment tensioner and pulley supplier in the world, to ensure proper form, fit, and performance.
  • Internal “round spring” technology to provide constant belt tension and alignment throughout its service life.
  • Heavy duty steel pulley construction
  • OE-spec sealed ball bearings with synthetic grease and double lip seals for long life
See More

FAQs for 2018 Cadillac CT6 Belt Tensioners

What are the best-selling Belt Tensioners for 2018 Cadillac CT6s?

Out of 3 Belt Tensioners that fit 2018 Cadillac CT6s, the following parts are the top sellers:

What’s the price range for 2018 Cadillac CT6 Belt Tensioners?

The prices of Belt Tensioners for the 2018 Cadillac CT6 range from $50.99 up to $73.99 for the most premium parts.

What is the average price of a Belt Tensioner for a 2018 Cadillac CT6?

The average price for Belt Tensioners for the 2018 Cadillac CT6 is $58.81. Keep in mind the variety of part types within our Belt Tensioner category, where you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Belt Tensioners for other Cadillac CT6 model years?

Yes, we carry Belt Tensioners for 3 model years of Cadillac CT6s between 2016 and 2020. The following model years are the most popular for Belt Tensioner purchases: 2020, 2019, 2017, and 2016.

What are the cheapest Belt Tensioners for my 2018 Cadillac CT6?

The cheapest 2018 Cadillac CT6 Belt Tensioners we carry are:

Does Advance Auto Parts sell Belt Tensioners for any other 2018 Cadillac models?

Yes. We stock Belt Tensioners for 6 other popular 2018 Cadillac models. Some of the most popular are 2018 Escalade Belt Tensioners, 2018 Escalade ESV Belt Tensioners, 2018 CTS Belt Tensioners, 2018 XTS Belt Tensioners, and 2018 ATS Belt Tensioners.

What types of Belt Tensioners do you sell for my 2018 Cadillac CT6?

We currently have just 1 Belt Tensioner in stock for a 2018 Cadillac CT6, and as of 11/2/25, it is a Belt Tensioner Assembly.

Can I get help with 2018 Cadillac CT6 Belt Tensioner orders?

Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Cadillac Belt Tensioners and more.

What is your return policy for Cadillac CT6 Belt Tensioners?

Advance Auto Parts keeps returns simple. For new Cadillac CT6 Belt Tensioners and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.