2003 BMW Z4 Belts and Hoses

Please Select your Vehicle to See Exact Fit Parts

Essential Belts and Hoses for 2003 BMW Z4s

Dorman – Help – Dorman – Help Oil Separator Upper Vent Tube, 46045 (Part No.46045)

Dorman - Help Oil Separator Upper Vent Tube, 46045

from

$31.99
Proper crankcase ventilation is key to smooth performance and engine longevity. Made from quality materials to resist cracking and brittleness, this PCV hose replaces a worn or leaking original equipment hose.
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Dorman – Help – Dorman – Help Crankcase Vent Hose, 46044 (Part No.46044)

Dorman - Help Crankcase Vent Hose, 46044

from

$32.99
Proper crankcase ventilation is key to smooth performance and engine longevity. Made from quality materials to resist cracking and brittleness, this PCV hose replaces a worn or leaking original equipment hose.
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Dorman – Help – Dorman – Help Positive Crankcase Ventilation Vent Hose, 46106 (Part No.46106)

Dorman - Help Positive Crankcase Ventilation Vent Hose, 46106

from

$24.99
Proper crankcase ventilation is key to smooth performance and engine longevity. Made from quality materials to resist cracking and brittleness, this PCV hose replaces a worn or leaking original equipment hose.
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Dayco – "Dayco Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11"" Long, 1.53"" Diameter, C72744" (Part No.C72744)

"Dayco Curved Radiator Hoses: EPDM Rubber, Standard Duty, 11"" Long, 1.53"" Diameter, C72744"

from

$64.99
The Dayco curved radiator hose features knitted reinforcement, a protective sleeve and a synthetic EPDM rubber construction for high-strength performance, protection against abrasion and resistance to oil, mud, salt, road debris, ozone and coolants. It can also withstand temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.
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Rein – Rein Radiator Hose, CHR0406R (Part No.CHR0406R)

Rein Radiator Hose, CHR0406R

from

$42.99
Rein Automotive OE quality radiator hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses and hose assemblies, Rein hoses are identical to the OEM, from the size and shape of their branches to the thermoplastic quick connect fittings.
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Dayco – "Dayco Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10.5"" Long, 1.50"" Diameter, C72788" (Part No.C72788)

"Dayco Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10.5"" Long, 1.50"" Diameter, C72788"

from

$34.99
The Dayco curved radiator hose features knitted reinforcement, a protective sleeve and a synthetic EPDM rubber construction for high-strength performance, protection against abrasion and resistance to oil, mud, salt, road debris, ozone and coolants. It can also withstand temperature variations of -40 Deg. F (-40 Deg. C) to +257 Deg. F (+125 Deg. C). The inner base tube is reinforced with knitted rayon for maximum strength and burst resistance for the life of the hose.
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Dayco – Idler Pulley, Dayco, 89089 (Part No.89089)

Idler Pulley, Dayco, 89089

from

$51.99
Dayco idler/tensioner pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and longer belt life. In addition to stamped, forged steel and powdered metal pulleys, Dayco also designs ultra-strong plastic pulleys with specially formulated glass-filled polymers that resist wear and tear. Premium lubricated ball bearings and double high temperature seals ensure peak bearing performance, the most critical element of a pulley’s service life.
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INA US – INA US Engine Timing Belt Tensioner, FT40104 (Part No.FT40104)

INA US Engine Timing Belt Tensioner, FT40104

from

$82.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
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INA US – INA US Engine Timing Belt Tensioner, FT40252 (Part No.FT40252)

INA US Engine Timing Belt Tensioner, FT40252

from

$174.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
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Litens – Litens Accessory Drive Belt Tensioner – Original Equipment Quality, 999682A (Part No.999682A)

Litens Accessory Drive Belt Tensioner - Original Equipment Quality, 999682A

from

$166.99
This Litens supplied tensioner is manufactured by the original equipment (O.E.) manufacturer. This part is specifically designed for BMW / Mini applications. Heavy duty thermoplastic pulley construction ensures long life and trouble-free performance. This tensioner meets or exceeds all original equipment fit, form, and performance characteristics. 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.
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Litens – Litens Accessory Drive Belt Tensioner – Original Equipment Quality, 999067A (Part No.999067A)

Litens Accessory Drive Belt Tensioner - Original Equipment Quality, 999067A

from

$83.99
“This Litens hydraulic actuator is manufactured by the Original Equipment (O.E.) supplier of this popular BMW tensioner component. This “”O.E. Exact”””
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Rein – Rein Radiator Hose, CHR0478 (Part No.CHR0478)

Rein Radiator Hose, CHR0478

from

$47.99
Rein Automotive OE quality radiator hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses and hose assemblies, Rein hoses are identical to the OEM, from the size and shape of their branches to the thermoplastic quick connect fittings.
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Rein – Rein Radiator Hose, CHR0599 (Part No.CHR0599)

Rein Radiator Hose, CHR0599

from

$73.99
Rein Automotive OE quality radiator hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses and hose assemblies, Rein hoses are identical to the OEM, from the size and shape of their branches to the thermoplastic quick connect fittings.
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Rein – Rein Radiator Hose, CHR0582 (Part No.CHR0582)

Rein Radiator Hose, CHR0582

from

$51.99
Rein Automotive OE quality radiator hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses and hose assemblies, Rein hoses are identical to the OEM, from the size and shape of their branches to the thermoplastic quick connect fittings.
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Gates – Gates Micro-V Serpentine Drive Belt, K060721 (Part No.K060721)

Gates Micro-V Serpentine Drive Belt, K060721

from

$51.99
Import or domestic, car or truck, every vehicle can depend on the superior quality of Gates precision fit Micro-V belts. With advanced technology that matches the OE size, construction and materials, Gates Micro-V ensures optimal vehicle performance.
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Carquest Standard – "Carquest Serpentine Belt: 34.0"" Long, 4 Rib Count, 340K4" (Part No.340K4)

"Carquest Serpentine Belt: 34.0"" Long, 4 Rib Count, 340K4"

from

$21.49
Carquest Standard serpentine belts are constructed from quality materials to ensure durability and a long lifespan. We design and manufacture each Carquest Standard belt to enhance belt-to-pulley contact, maximizing load-carrying capacity and extending belt life. Our serpentine belts are built with EPDM rubber and treated polyester cord to improve durability and belt life. Carquest Standard belts are the right choice when looking for OE fit, form, and function at a great price.
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Dayco – Dayco Poly Rib Belt Serpentine Belt 57.25 Long, 6 Rib Count, 5060573 (Part No.5060573)

Dayco Poly Rib Belt Serpentine Belt 57.25 Long, 6 Rib Count, 5060573

from

$35.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.
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Dayco – Dayco Poly Rib Belt Serpentine Belt 72.05 Long, 6 Rib Count, 5060720 (Part No.5060720)

Dayco Poly Rib Belt Serpentine Belt 72.05 Long, 6 Rib Count, 5060720

from

$41.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.
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Dayco – Idler Pulley, Dayco, 89133 (Part No.89133)

Idler Pulley, Dayco, 89133

from

$27.49
Dayco idler/tensioner pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and longer belt life. In addition to stamped, forged steel and powdered metal pulleys, Dayco also designs ultra-strong plastic pulleys with specially formulated glass-filled polymers that resist wear & tear. Premium lubricated ball bearings and double high temperature seals ensure peak bearing performance, the most critical element of a pulley’s service life.
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Litens – Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900136A (Part No.900136A)

Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900136A

from

$63.99
This pulley is manufactured by the original equipment pulley supplier to ensure proper fit and performance. This pulley is produced for serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. This replacement part is made in Germany to the O.E. specified design and meets all performance and durability requirements. Heavy duty thermoplastic construction. This is a 70mm flat pulley (without flange) for BMW applications. 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.
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Gates – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38008 (Part No.38008)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38008

from

$30.49
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.
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Litens – Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900125A (Part No.900125A)

Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900125A

from

$28.99
Litens Automotive is the original equipment (O.E.) supplier for this application. This genuine Litens replacement pulley is also manufactured by Litens, the world’s largest supplier of original equipment power transmission products. Heavy duty thermoplastic pulley construction ensures long life and trouble-free performance. This pulley 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.
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Litens – Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900031A (Part No.900031A)

Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900031A

from

$29.99
This pulley is manufactured by Litens Automotive the original equipment part supplier and the inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part is made in Canada using the O.E. specified design and meets all performance and durability requirements. Heavy duty thermoplastic construction for long life and trouble-free performance. 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.
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INA US – INA US Engine Timing Idler, FP05151 (Part No.FP05151)

INA US Engine Timing Idler, FP05151

from

$60.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
See More

INA US – INA US Engine Timing Idler, FP04181 (Part No.FP04181)

INA US Engine Timing Idler, FP04181

from

$63.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
See More

Gates – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38018 (Part No.38018)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38018

from

$27.99
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.
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INA US – INA US Engine Timing Idler, FP00011 (Part No.FP00011)

INA US Engine Timing Idler, FP00011

from

$58.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
See More

Litens – Litens Idler Pulley: Direct Fit, Thermoplastic, 80mm Diameter, 900003A (Part No.900003A)

Litens Idler Pulley: Direct Fit, Thermoplastic, 80mm Diameter, 900003A

from

$51.99
This Litens pulley is manufactured by the original equipment part supplier to ensure proper fit and performance. This pulley is produced for BMW serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. As with the original equipment part, this replacement part is made in Germany using the O.E. specified design and meets all performance and durability requirements. Proper installation is ensured by the inclusion of a locator pin molded onto the engine side of the idler. 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.
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Upgrade your 2003 BMW Z4 with Top-Quality Belts and Hoses

When it comes to maintaining or upgrading your 2003 BMW Z4, nothing is more important than using high-quality OEM or aftermarket parts that you can trust. Whether you’re repairing damage to your BMW or enhancing its overall performance, Belts and Hoses are key to keeping your Z4 functioning at its best. At Advance Auto Parts, we offer a wide selection of 29 Belts and Hoses for the 2003 BMW Z4, designed to meet your needs without breaking the bank. From PCV Hose replacements to Pulleys upgrades, we’ve got you covered with parts that fit your vehicle perfectly and ensure long-lasting performance.

Affordable Prices and Wide Selection

Shopping for Belts and Hoses for any vehicle can be a hassle, especially if you’re on a budget. But with Advance Auto Parts, you can find high-quality Belts and Hoses for your 2003 BMW Z4 at great prices. Our Belts and Hoses inventory for this model ranges from just $21.49 to $216.99, with an average price of $60.09. Our 29 Belts and Hoses in stock come from 9 trusted brands, so you’re sure to find the right part for your 2003 BMW Z4 without overspending.

Top Brands and High Customer Satisfaction

Advance Auto Parts takes pride in offering only the best brands in the automotive industry. For your 2003 BMW Z4, we stock popular OEM and aftermarket Belts and Hoses from top names like Litens, Dayco, Dorman, and more. Litens Belts and Hoses start at just $29.99 and boast an impressive 4.7 stars average rating from customers. Dayco and Dorman also bring quality to the table, with Belts and Hoses available starting at $31.99, and at an average 4.5 stars rating. With 224 customer reviews and counting, our 2003 BMW Z4 Belts and Hoses have a strong track record of reliability, ensuring you can trust your purchase.

Explore Related Parts and More

While you’re here, don’t forget to check out other essential categories that go hand in hand with Belts and Hose upgrades. Explore related part types like Batteries and Chargers, Oil and Lubricants and more to make sure your 2003 BMW Z4 is always ready to roll. We’re committed to providing you with everything you need to keep your Z4 in top shape, all in one place. Start shopping confidently below for your 2003 BMW Z4!

Best-Selling PCV Hoses for 2003 BMW Z4s

Enhance the driving experience in your BMW with 3 quality PCV Hose components, starting at $24.99.

Dorman – Help – Dorman – Help Oil Separator Upper Vent Tube, 46045 (Part No.46045)

Dorman - Help Oil Separator Upper Vent Tube, 46045

from

$31.99
Proper crankcase ventilation is key to smooth performance and engine longevity. Made from quality materials to resist cracking and brittleness, this PCV hose replaces a worn or leaking original equipment hose.
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Dorman – Help – Dorman – Help Crankcase Vent Hose, 46044 (Part No.46044)

Dorman - Help Crankcase Vent Hose, 46044

from

$32.99
Proper crankcase ventilation is key to smooth performance and engine longevity. Made from quality materials to resist cracking and brittleness, this PCV hose replaces a worn or leaking original equipment hose.
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Dorman – Help – Dorman – Help Positive Crankcase Ventilation Vent Hose, 46106 (Part No.46106)

Dorman - Help Positive Crankcase Ventilation Vent Hose, 46106

from

$24.99
Proper crankcase ventilation is key to smooth performance and engine longevity. Made from quality materials to resist cracking and brittleness, this PCV hose replaces a worn or leaking original equipment hose.
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Most Popular 2003 BMW Z4 Pulleys

Customize your BMW with 8 Pulleys products like Belt Tensioner Pulleys and Idler Pulleys, all priced under $63.99.

Litens – Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900031A (Part No.900031A)

Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900031A

from

$29.99
This pulley is manufactured by Litens Automotive the original equipment part supplier and the inventor of the first automatic belt tensioner in 1979 and today the world’s largest supplier of Original Equipment (O.E.) belt tensioning and routing products. This pulley is produced for serpentine belt routing applications and as the pulley component on automatic tensioner applications. This pulley conforms to original equipment material, tolerances, and specifications. The part is made in Canada using the O.E. specified design and meets all performance and durability requirements. Heavy duty thermoplastic construction for long life and trouble-free performance. 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.
See More

Dayco – Idler Pulley, Dayco, 89133 (Part No.89133)

Idler Pulley, Dayco, 89133

from

$27.49
Dayco idler/tensioner pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and longer belt life. In addition to stamped, forged steel and powdered metal pulleys, Dayco also designs ultra-strong plastic pulleys with specially formulated glass-filled polymers that resist wear & tear. Premium lubricated ball bearings and double high temperature seals ensure peak bearing performance, the most critical element of a pulley’s service life.
See More

Gates – Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38008 (Part No.38008)

Gates DriveAlign Belt Drive Idler/Tensioner Pulley, 38008

from

$30.49
Gates is a leading manufacturer of Original Equipment (OE) idler pulleys. Gates DriveAlign(R) Idler Pulleys meet or exceed OE specifications. High quality, high strength bearings run cooler and last longer than original bearings. DriveAlign Idler Pulleys are built to last by resisting dirt, salt, and other under-hood contaminants. Designed for use on automobiles and light trucks as locked center tensioning, automatic belt tensioning and idler pulleys.
See More

Litens – Litens Idler Pulley: Direct Fit, Thermoplastic, 80mm Diameter, 900003A (Part No.900003A)

Litens Idler Pulley: Direct Fit, Thermoplastic, 80mm Diameter, 900003A

from

$51.99
This Litens pulley is manufactured by the original equipment part supplier to ensure proper fit and performance. This pulley is produced for BMW serpentine belt routing applications and conforms to original equipment material, tolerances, and specifications. As with the original equipment part, this replacement part is made in Germany using the O.E. specified design and meets all performance and durability requirements. Proper installation is ensured by the inclusion of a locator pin molded onto the engine side of the idler. 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.
See More

INA US – INA US Engine Timing Idler, FP04181 (Part No.FP04181)

INA US Engine Timing Idler, FP04181

from

$63.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
See More

INA US – INA US Engine Timing Idler, FP00011 (Part No.FP00011)

INA US Engine Timing Idler, FP00011

from

$58.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
See More

Dorman – Dorman Idler/Tensioner Pulley: Specific Fit, Polyamide, 70 mm Diameter, 419-657 (Part No.419-657)

Dorman Idler/Tensioner Pulley: Specific Fit, Polyamide, 70 mm Diameter, 419-657

from

$45.49
This replacement accessory drive belt idler pulley has been engineered to match the function and performance of the original pulley on select vehicle years, makes and models, properly restoring critical vehicle operations.
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INA US – INA US , FP03441 (Part No.FP03441)

INA US , FP03441

from

$33.99
INA US , FP03441. COOLING SYSTEM – PARTS & COMPONENTS>BELT SYSTEMS>BELT HARDWARE>BELT IDLERS & PULLEYS from INA US
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Top Picks for 2003 BMW Z4 Serpentine and V Belts

Upgrade BMW Z4s with top-quality Serpentine and V Belts parts, including 5 OEM and aftermarket selections for your 2003 model.

Dayco – Dayco Poly Rib Belt Serpentine Belt 34.06 Long, 4 Rib Count, 5040340 (Part No.5040340)

Dayco Poly Rib Belt Serpentine Belt 34.06 Long, 4 Rib Count, 5040340

from

$33.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.
See More

Dayco – Idler Pulley, Dayco, 89089 (Part No.89089)

Idler Pulley, Dayco, 89089

from

$51.99
Dayco idler/tensioner pulleys are built with smoother surfaces and tighter dimensional tolerances, which translates to less vibration and longer belt life. In addition to stamped, forged steel and powdered metal pulleys, Dayco also designs ultra-strong plastic pulleys with specially formulated glass-filled polymers that resist wear and tear. Premium lubricated ball bearings and double high temperature seals ensure peak bearing performance, the most critical element of a pulley’s service life.
See More

Driveworks – Driveworks Poly Rib Belt Serpentine Belt 34.06 Long, 4 Rib Count, 340K4 (Part No.340K4)

Driveworks Poly Rib Belt Serpentine Belt 34.06 Long, 4 Rib Count, 340K4

from

$21.49
The Driveworks belt is designed to provide better belt-to-pulley contact. The specialized rubber compound incorporates a high temperature polymer formulated to maximize load carrying requirements and belt life. This Driveworks ribbed belt has been constructed and engineered to meet the stringent demands of today’s automotive drive systems. The Driveworks ribbed belt delivers long-lasting dependable belt life.
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Dayco – Dayco Poly Rib Belt Serpentine Belt 57.25 Long, 6 Rib Count, 5060573 (Part No.5060573)

Dayco Poly Rib Belt Serpentine Belt 57.25 Long, 6 Rib Count, 5060573

from

$35.99
Constructed with aramid reinforced EPDM compounds, the Dayco poly-V serpentine belt delivers  more than just OE quality. Developed through extensive laboratory and road testing, the rib profile in this EPDM belt has been engineered to conform to high mileage, worn or misaligned drives and helps eliminate noisy belt conditions. Dayco poly rib serpentine belts offer extensive flexibility and longer service life, while handling higher workloads and temperatures.
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Carquest Standard – "Carquest Serpentine Belt: 34.0"" Long, 4 Rib Count, 340K4" (Part No.340K4)

"Carquest Serpentine Belt: 34.0"" Long, 4 Rib Count, 340K4"

from

$21.49
Carquest Standard serpentine belts are constructed from quality materials to ensure durability and a long lifespan. We design and manufacture each Carquest Standard belt to enhance belt-to-pulley contact, maximizing load-carrying capacity and extending belt life. Our serpentine belts are built with EPDM rubber and treated polyester cord to improve durability and belt life. Carquest Standard belts are the right choice when looking for OE fit, form, and function at a great price.
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In-Demand Engine Cooling Hoses for 2003 BMW Z4s

Select from 2 premium Engine Cooling Hoses parts for your 2003 BMW Z4, with prices ranging from $47.99 to $57.99.

Rein – Rein Radiator Hose, CHR0478 (Part No.CHR0478)

Rein Radiator Hose, CHR0478

from

$47.99
Rein Automotive OE quality radiator hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses and hose assemblies, Rein hoses are identical to the OEM, from the size and shape of their branches to the thermoplastic quick connect fittings.
See More

Rein – Rein Radiator Hose, CHR0379R (Part No.CHR0379R)

Rein Radiator Hose, CHR0379R

from

$57.99
Rein Automotive OE quality radiator hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses and hose assemblies, Rein hoses are identical to the OEM, from the size and shape of their branches to the thermoplastic quick connect fittings.
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Most Sold 2003 BMW Z4 Belt Tensioners

Explore our best-selling BMW parts for the 2003 Z4 among 11 OEM and aftermarket options starting from $36.49.

Dayco – Dayco Serpentine Belt Tensioner 1 Piece, HD, Built To Outperform And Outlast OE Parts, 89342 (Part No.89342)

Dayco Serpentine Belt Tensioner 1 Piece, HD, Built To Outperform And Outlast OE Parts, 89342

from

$70.99
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.
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Litens – Litens Accessory Drive Belt Tensioner – Original Equipment Quality, 999141A (Part No.999141A)

Litens Accessory Drive Belt Tensioner - Original Equipment Quality, 999141A

from

$64.99
“Litens was the Original Equipment (O.E.) supplier of this BMW tensioner and offers this “”O.E. Exact”””
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Litens – Litens Accessory Drive Belt Tensioner – Original Equipment Quality, 999162A (Part No.999162A)

Litens Accessory Drive Belt Tensioner - Original Equipment Quality, 999162A

from

$169.99
“This Litens tensioner is manufactured by the Original Equipment (O.E.) supplier of this popular tensioner used in BMW vehicles. This “”O.E. Exact”””
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INA US – INA US Engine Timing Belt Tensioner, FT30097 (Part No.FT30097)

INA US Engine Timing Belt Tensioner, FT30097

from

$216.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
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INA US – INA US Engine Timing Belt Tensioner, FT40050 (Part No.FT40050)

INA US Engine Timing Belt Tensioner, FT40050

from

$151.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
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INA US – INA US Accessory Drive Belt Tensioner Assembly, FT40009 (Part No.FT40009)

INA US Accessory Drive Belt Tensioner Assembly, FT40009

from

$83.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
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INA US – INA US Engine Timing Belt Tensioner, FT30015 (Part No.FT30015)

INA US Engine Timing Belt Tensioner, FT30015

from

$83.99
Our front end auxiliary drive (FEAD) solutions ensure outstanding vibration damping in the smallest of installation spaces in today€™s high-load engines. Besides offering a complete selection of individual components, individually-assembled FEAD kits allow holistic maintenance that help avoid secondary damages.
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Dorman – Dorman Automatic Belt Tensioner (Tensioner Only), 419-035 (Part No.419-035)

Dorman Automatic Belt Tensioner (Tensioner Only), 419-035

from

$64.99
This accessory drive belt tensioner assembly is designed to match the fit of an original equipment assembly on specified vehicles. It is engineered to help ensure proper belt tension when an original belt is slipping, broken, or worn from fatigue.
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URO Parts – URO Parts Belt Tensioner Conversion Kit, Update from a mechanical tensioner to a hydraulic style tensioner, 11287838797K (Part No.11287838797K)

URO Parts Belt Tensioner Conversion Kit, Update from a mechanical tensioner to a hydraulic style tensioner, 11287838797K

from

$54.99
For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced €œGenuine€ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products, . URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.
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URO Parts – URO Parts Belt Tensioner Assembly, Incl. NTN/NSK bearing, 11281427252 (Part No.11281427252)

URO Parts Belt Tensioner Assembly, Incl. NTN/NSK bearing, 11281427252

from

$39.99
For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced €œGenuine€ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products, . URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.
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URO Parts – URO Parts Acc. Belt Tensioner w/o Pulley, 11287838797 (Part No.11287838797)

URO Parts Acc. Belt Tensioner w/o Pulley, 11287838797

from

$36.49
For European vehicles, A.P.A. manufactures the URO Parts brand of quality replacement parts, which meet or exceed OEM specifications. URO Parts components are ideal for both professional and DIY vehicle repair, and are often the exclusive aftermarket alternative to overpriced €œGenuine€ components. By reducing deferred maintenance with URO Parts, you will increase the bottom line of your business. With its URO Premium line, A.P.A. offers problem-solving upgraded components that are superior to failure-prone OEM parts in design and/or materials. A.P.A. is so confident in the longevity and reliability of URO Premium products, . URO Parts also specializes in accurate reproduction parts for classic vehicles, including a huge variety of items that are no longer available from the dealer.
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Top-Rated Belts and Hoses Brands For Your 2003 BMW Z4

Shop for the best-rated brands offering Belts and Hoses and other products for your 2003 BMW Z4s. Below you’ll find some of our best rated Belts and Hoses from Litens, Dayco, and Dorman, and more. Belts and Hoses from these brands that fit a 2003 Z4 start at just $29.99 and are rated as high as 4.7 stars. OEM and aftermarket Belts and Hoses don’t get more top quality, durable, and affordable than from the brands below.

Popular Litens 2003 BMW Z4 Belts and Hoses

When it comes to maintaining or upgrading your 2003 BMW Z4, using quality Belts and Hoses is essential to ensure durability and a perfect fit. Litens ticks all of those boxes. We offer a wide selection of Litens Belts and Hoses, specifically designed for the 2003 BMW Z4. With over 1 Litens brand Belts and Hoses in stock, you’re sure to find what you need. The prices for these top-notch parts start as low as $29.99. Plus, with over 5 customer reviews and an average rating of 4.7 stars, you can trust that our Litens Belts and Hoses will get the job done right. Choose Advance Auto Parts for reliability, quality, and expert-approved parts that keep your vehicle running strong.
Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900031A
from $29.99
(5)
Litens Idler/Tensioner Pulley: Direct Fit, Thermoplastic, 70mm Diameter, 900031A
“Works perfectly! The old one was squeaking and it was time to be replaced.”

Popular Dayco 2003 BMW Z4 Belts and Hoses

Dayco auto parts is one of the highest quality Belts and Hose brands in the market. Any 2003 BMW Z4 owner should feel confident when installing genuine Dayco parts in their vehicle. To ensure the best fit and performance for your 2003 Z4, Advance Auto Parts carries a full inventory of 3 Dayco Belts and Hoses. Plus you will be keeping your BMW in peak condition while saving money because prices on these Dayco Belts and Hoses range from $33.99 to $70.99, plus, with more than 51 customer reviews and an impressive 4.5 stars average rating, you can be confident the Fram Belts and Hoses below will deliver on both quality and value.
Dayco Serpentine Belt Tensioner 1 Piece, HD, Built To Outperform And Outlast OE Parts, 89342
from $70.99
(22)
Dayco Serpentine Belt Tensioner 1 Piece, HD, Built To Outperform And Outlast OE Parts, 89342
“My original idler pulley failed on my vehicle at 100,000 miles and left me stranded on a Friday night. I had to replace the idler pulley (Dayco 89089)”
Idler Pulley, Dayco, 89089
from $51.99
(23)
Idler Pulley, Dayco, 89089
“Good fit”
Dayco Poly Rib Belt Serpentine Belt 34.06 Long, 4 Rib Count, 5040340
from $33.99
(6)
Dayco Poly Rib Belt Serpentine Belt 34.06 Long, 4 Rib Count, 5040340
“Used to replace worn belt on BMW X3”

FAQs for 2003 BMW Z4 Belts and Hoses

Which Belts and Hoses are best-sellers for 2003 BMW Z4s?

Out of 29 Belts and Hoses that fit 2003 BMW Z4s, the following parts are the top sellers:

What’s the price range for 2003 BMW Z4 Belts and Hoses?

Belts and Hose prices for the 2003 BMW Z4 start at $21.49 and go up to $216.99 for the most premium parts.

What’s the average price of a Belts and Hose for a 2003 BMW Z4?

The average price for Belts and Hoses for the 2003 BMW Z4 is $60.09. Keep in mind the variety of part types within our Belts and Hose category so you are likely to find a wide range of prices across a variety of parts and components.

Does Advance Auto Parts sell Belts and Hoses for other BMW Z4 model years?

Yes, we currently carry Belts and Hoses for 20 model years of BMW Z4s between 2004 and 2026. Belts and Hoses are bought most frequently for the following model years: 2022, 2021, 2020, 2019, 2016, 2015, 2014, 2013, and 2012.

What are the cheapest Belts and Hoses for my 2003 BMW Z4?

What are the top-rated Belts and Hoses that fit the 2003 BMW Z4?

Out of 224 reviews by customers, our 2003 BMW Z4 Belts and Hoses have an average customer rating of . These are some of the highest-rated Belts and Hose types for the 2003 BMW Z4 and their top-rated products:

What types of Belts and Hoses do you sell for my 2003 BMW Z4?

As of 8/2/26, these are some of the most in-demand types of Belts and Hoses for a 2003 BMW Z4:

Can I get help with 2003 BMW Z4 Belts and Hose orders?

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

What is your return policy for BMW Z4 Belts and Hoses?

Advance Auto Parts keeps returns simple. For new BMW Z4 Belts and Hoses and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.