BMW 525i Belts and Hoses

Essential BMW 525i Belts and Hoses

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

Idler Pulley: Direct Fit, Thermoplastic, 80mm Diameter

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$29.99
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.

Product Features:
  • Manufactured by the original equipment part suppliers in the world to ensure proper form, fit, and performance.
  • Heavy Duty Glass Reinforced Polymer Pulley for optimized dimensional control and running surface durability
  • Installation instructions included.
  • 80mm O.D.; 10.2mm I.D.; 24.5mm width; smooth running surface; Thermoplastic.
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Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 17" Long, 1.50" Diameter (Part No.D70512)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 17" Long, 1.50" Diameter

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$25.99
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.

Product Features:
  • Meets SAE J20R4, Class D-1 requirements
  • Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Provides excellent protection against external elements
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Litens – Kit de courroie d’entrainement accessoire (Part No.LV999141A)

Kit de courroie d'entrainement accessoire

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$149.99
This Litens Serpentine Belt Drive Component Kit fits 1999-2006 BMW 320i, 325Ci, 325i, 325xi, 330Ci, 330i, 525i, X3, Z3 w/2.2/2.5/3.0L. These kits make it easy to maintain your entire front end accessory drive system. Eliminate the need to search for individual parts by purchasing this all-in-one solution. Front end accessory drives require maintenance at specific intervals, and parts should be replaced as part of your regularly scheduled tune-up to ensure your vehicle is at its best. Each kit contains a Litens belt tensioner, Bando serpentine belt, and any necessary idler pulley(s). All required hardware is included for the installation . Application specific instructions are also conveniently included. All parts meet or exceed OE fit, function, and 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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Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 12" Long, 1.59" Diameter (Part No.C71663)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 12" Long, 1.59" Diameter

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$36.99
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.

Product Features:
  • Meets SAE J20R4, Class D-1 requirements
  • Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Provides excellent protection against external elements
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Dorman – Crankcase Ventilation Tube (Part No.917-125)

Crankcase Ventilation Tube

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$60.99
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.

Product Features:
  • Ideal replacement – this PCV tubing replaces the original tubing on specified vehicle years, makes and models
  • Durable materials – this PCV tubing is designed to withstand exposure to extreme temperatures and oil vapors to resist cracking and leaking
  • Cost-effective solution – offers original equipment quality at a competitive price
  • Quality tested – this part has undergone try-on and material testing to ensure a quality fit and long service life
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Dayco – Idler Pulley, Dayco (Part No.89089)

Idler Pulley, Dayco

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$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.

Product Features:
  • Designed for the majority of automotive vehicle applications on the road today
  • High-quality materials help resist wear and improve belt life
  • Features premium lubricated bearings to extend service life
  • Meets or exceeds OE quality
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INA US – Engine Timing Belt Tensioner (Part No.FT30097)

Engine Timing Belt Tensioner

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$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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Gates – Molded 90 Degree Heater Hose (Part No.28467)

Molded 90 Degree Heater Hose

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$15.99
Specially designed for difficult heater hose applications requiring sharp 90 degree bends in the hose. Eliminates the need for extensive inventory of OE type curved heater hose. Just 22 sizes handle thousands of applications.

Product Features:
  • Resists electrochemical degradation and water permeation
  • Use with heater hose connectors and bulk heater hose to create custom assemblies
  • Compatible for coolant, air and water applications
  • EPDM tube and cover, synthetic fiber reinforcement
  • SAE 20R3 EC Class D1, SAE 20R4 EC Class D1
  • Temperature Range: -40 Deg. F to +275 Deg. F (-40 Deg. C to +135 Deg. C)
  • Caution: Do not use for fuel or oil transfer applications
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Dayco – Molded Heater Hose; EPDM Rubber, 31/32 Inch Diameter, 21 1/2 Inch Length (Part No.88505)

Molded Heater Hose; EPDM Rubber, 31/32 Inch Diameter, 21 1/2 Inch Length

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$33.99
Providing reliable service in applications requiring molded hoses in small diameters, the Dayco small I.D. heater hose is designed to replace OEM coolant hoses. Made with the same bends and routing as the original assembly, this molded hose is meant to fit the vehicle precisely. The knitted reinforcement and synthetic EPDM construction provide high-strength performance and resistance to detrimental environmental elements, coolants and temperature variations of -40°F (-40°C) to +257°F (+125°C) and the “quick connect” end allows for fast, convenient installation.

Product Features:
  • Meets the requirements of SAE J20R3, Class D-1
  • Designed to meet Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Engineered as an OEM replacement
  • The knitted polyester reinforcement provides high burst strength and resists degradation from temperature extremes and moisture
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INA US – ACC DRV BELT TNS ASY (Part No.ED0003)

ACC DRV BELT TNS ASY

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$75.99
ACC DRV BELT TNS ASY

Driveworks – Poly Rib Belt Serpentine Belt; 34.06 Long, 5 Rib Count (Part No.340K5)

Poly Rib Belt Serpentine Belt; 34.06 Long, 5 Rib Count

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$18.99
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.

Product Features:
  • Constructed with heat and ozone resistant EPDM rubber
  • Fiber is added to the rib stock to reinforce the rubber and reduce noise from worn and misaligned pulleys
  • Made with treated polyester cord to reduce belt stretch
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Dayco – Poly Rib Belt Serpentine Belt; 34.06 Long, 4 Rib Count (Part No.5040340)

Poly Rib Belt Serpentine Belt; 34.06 Long, 4 Rib Count

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$30.99
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 mile

Product Features:
  • Provides full coverage for today’s light-duty vehicle market, especially vehicles with troublesome drives
  • Engineered to help address noise issues caused by the belt drive 
  • Capable of handling more extreme temperatures and workloads
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Dayco – Idler Pulley, Dayco (Part No.89046)

Idler Pulley, Dayco

from

$56.99
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.

Product Features:
  • Designed for the majority of automotive vehicle applications on the road today
  • High-quality materials help resist wear and improve belt life
  • Features premium lubricated bearings to extend service life
  • Meets or exceeds OE quality
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Dorman – Idler/Tensioner Pulley: Specific Fit, Polyamide, 70 mm Diameter (Part No.419-657)

Idler/Tensioner Pulley: Specific Fit, Polyamide, 70 mm Diameter

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$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.

Product Features:
  • Direct replacement – this accessory drive belt idler pulley matches the fit and function of the original equipment pulley on specified vehicles
  • Restores performance – fixes a failed, squealing or groaning noise from a worn idler pulley
  • Application specific – reverse engineered from the original design on certain vehicle years, makes and models
  • Trustworthy quality – backed by team of engineers and quality specialists in the United States
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Dayco – Bottom Cog V-Belt; 32 Inch Long, Exact Fit Premium Quality (Part No.15320)

Bottom Cog V-Belt; 32 Inch Long, Exact Fit Premium Quality

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$12.49
Dayco has combined raw-edge construction and a smooth top to ensure high performance on vehicles and drives that utilize V-belts. The Dayco high performance V-belt delivers more flexibility and increases airflow around the belt so it runs cooler and lasts longer. Three plies of neoprene impregnated fabric resist heat, oil and grease while a specially-formulated treatment of the polyester cord provides the strength, stability and reliability that are required for one of the most innovative, top-performing V-belts.

Product Features:
  •  Provides greater durability and flexibility – 35% stronger than all previous versions
  • Prevents electromechanical interference issues on modern vehicles
  •  Resists heat, oil and grease
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Gates – Automotive XL High Capacity V-Belt (Part No.9325)

Automotive XL High Capacity V-Belt

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$26.49
Replacement belt for the most demanding engine drives. Due to thermal forces, this variable notched belt actually tightens on the drive as it gets hot. This results in improved belt performance by reducing tension decay and noise.

Product Features:
  • Fiber-loaded rubber stock adds flexibility along the length of the belt and provides greater lateral stability in the pulley
  • Ground to ensure precise dimensional control of the top width and sidewall for proper adjustment to the pulley.
  • Thermoactivated pull cords for maintenance-free performance when properly installed and tensioned
  • Resists oil, heat, ozone, weather, and decay to improve belt life
  • Meets or exceeds SAE J636C specifications
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Rein – Oil Cooler Hose Assembly (Part No.FHA0001)

Oil Cooler Hose Assembly

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$53.99
Rein oil cooling hoses are manufactured with premium OE quality hose material designed to withstand the high pressure demands of automotive oil cooling systems. Rein oil cooling hoses are designed to resist excessive heat, oil and ozone factors that breakdown rubber and cause premature failure in oil cooling systems.

Product Features:
  • Manufactured with premium OE quality hose which offers maximum protection from premature failures.
  • Designed as direct-fit replacements to ensure trouble-free proper installation.
  • Complete with hardware and seals when necessary for installation to save installation time and additional costs.
  • Restores your vehicle to safe and optimal performance levels.
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Rein – Breather Hose (Part No.ABV0195)

Breather Hose

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$54.99
Rein Automotive OE quality breather hoses fit European vehicles the way the original manufacturer intended. Designed to be direct replacements for OE hoses, Rein hoses are identical to the OEM.

Product Features:
  • Matches original equipment design specifications.
  • Manufactured with high quality materials.
  • Direct fit for easy installation.
  • Resistant to heat, salt, road debris, oil and other contaminants.
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Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13" Long, 1.44" Diameter (Part No.C71266)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 13" Long, 1.44" Diameter

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$16.99
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.

Product Features:
  • Meets SAE J20R4, Class D-1 requirements
  • Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Provides excellent protection against external elements
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Gates – Molded Heater Hose: EPDM, Plastic, Steel, Direct Fit, 1.25" Inside Diameter (Part No.24072)

Molded Heater Hose: EPDM, Plastic, Steel, Direct Fit, 1.25" Inside Diameter

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$97.99
Modular coolant hoses are on many of today’s vehicles and are much more complex than the standard molded hoses of the past. Modular coolant hoses are hose assemblies with one or more components built into the hose. Some examples of these components include hose branches, quick connectors, valves, sensors, bleeders and flow restrictors. Manufactured identical or equivalent to the OE hose, modular coolant hoses will keep your vehicle’s cooling system running properly and efficiently for years to come.

Product Features:
  • Specifically-engineered materials resist collapse under vacuum
  • Engineered to resist electrochemical degradation – the leading cause of hose failure
  • EPDM tube; synthetic fiber knit reinforcement, heat, ozone- and chemical coolant-resistant EPDM cover
  • Manufactured with OEM-exact hose components (quick connects, branch connectors/tees, sensors, etc.)
  • Meets SAE 20R3 EC Class D1 under 25mm (1 in.) ID, SAE 20R4 EC Class D1 for 25mm (1 in.) ID and over
  • Temperature Range: -40 Deg. F to +257 Deg. F (-40 Deg. C to +125 Deg. C)
  • Note: Gates recommends replacing clamps each time a new coolant hose is installed
  • Caution: Do not use for fuel or oil transfer applications
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Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 14" Long, 1.56" Diameter (Part No.C70670)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 14" Long, 1.56" Diameter

from

$18.29
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.

Product Features:
  • Meets SAE J20R4, Class D-1 requirements
  • Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Provides excellent protection against external elements
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Dayco – Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 1.38" Diameter (Part No.C72165)

Curved Radiator Hoses: EPDM Rubber, Standard Duty, 10" Long, 1.38" Diameter

from

$18.79
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.

Product Features:
  • Meets SAE J20R4, Class D-1 requirements
  • Meets Type EC electro-chemical requirements as specified in SAE J1684, which prevents inner tube deterioration caused by the build-up of static electric charges
  • Provides excellent protection against external elements
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Rein – Radiator Hose (Part No.CHR0401R)

Radiator Hose

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$48.99
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.

Product Features:
  • Reduces installation time.
  • No cutting, refitting or adjusting the hose.
  • Prevents leaks and comebacks from reusing old quick connectors and o-rings.
  • Resistant to heat, salt, road debris, oil and other contaminants.
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Rein – Radiator Hose (Part No.CHR0005)

Radiator Hose

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$32.99
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.

Product Features:
  • Reduces installation time.
  • No cutting, refitting or adjusting the hose.
  • Prevents leaks and comebacks from reusing old quick connectors and o-rings.
  • Resistant to heat, salt, road debris, oil and other contaminants.
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Gates – Vulco-Flex II Flexible Coolant Hose (Part No.25477)

Vulco-Flex II Flexible Coolant Hose

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$17.79
Gates Vulco-Flex(R) II hose will bend in almost any direction. It easily replicates the angles and planes of a wide variety of expensive original equipment coolant hose, for quick, easy replacement.

Product Features:
  • Improved sealing surface for improved leak resistance
  • Their great flexibility makes installation easy
  • Maximum vehicle coverage with minimal inventory
  • Resistant to heat, oil and ozone
  • Rated for SAE 20R5 Class D-2 performance
  • Temperature range: up to +257 degrees Celsius. F (+125 Deg. C)
  • Note: Gates recommends replacing clamps and connectors each time a new radiator hose is installed.
  • Warning: Do not use for fuel or oil transfer applications
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Helping You Find the Right Belts and Hoses for Your BMW 525i

You love your 525i. So we’ve made it easier than ever to help you find BMW 525i Belts and Hoses in our online catalog. Our inventory holds 121 aftermarket and OEM Belts and Hoses for your BMW 525i, ranging from $4.99 to $221.99.

We offer parts from 9 brands trusted to make quality Belts and Hoses for your BMW 525i. Before you buy, take some time to read through customer reviews. We currently have 4,065 reviews of BMW 525i Belts and Hoses from previous customers. Some of the top rated parts include Idler Pulley, Dayco with 4.7 stars and Serpentine Belt Tensioner; 1 Piece, HD, Built To Outperform And Outlast OE Parts with 4.4 stars.

Find your 525i Belts and Hoses here, order online, and have your order shipped directly to your home. Prefer to have an in-person look at your BMW 525i part to confirm it’s just right? You can find your nearest Advance Auto Parts store and confirm they have the part in stock before heading over.

Top Belts and Hoses Brands for Your BMW 525i

Our inventory holds Belts and Hoses for your BMW 525i from 9 trusted brands. You’ll find OEM and aftermarket parts from brands like Dayco, DriveWorks, and Litens, all of which can keep that BMW happy.

FAQs for BMW 525i Belts and Hoses

What are the most purchased Belts and Hoses for the BMW 525i?

Out of 121 Belts and Hoses for the BMW 525i, the most popular in our inventory are:
Poly Rib Belt Serpentine Belt; 33.27 Long, 4 Rib Count
from $36.99
(43)
Poly Rib Belt Serpentine Belt; 33.27 Long, 4 Rib Count
Serpentine Belts
Poly Rib Belt Serpentine Belt; 33.27 Long, 4 Rib Count
from $30.49
(25)
Poly Rib Belt Serpentine Belt; 33.27 Long, 4 Rib Count
Serpentine Belts
Poly Rib Belt Serpentine Belt; 60.5 Long, 6 Rib Count
from $23.99
(21)
Poly Rib Belt Serpentine Belt; 60.5 Long, 6 Rib Count
Serpentine Belts

What are the top-rated BMW 525i Belts and Hoses?

Top-rated Belts and Hoses for your BMW 525i based on customer reviews/ratings are:
Idler Pulley, Dayco
from $51.99
(23)
Idler Pulley, Dayco
“Good fit”
Poly Rib Belt Serpentine Belt; 35.04 Long, 5 Rib Count
from $28.99
(18)
Poly Rib Belt Serpentine Belt; 35.04 Long, 5 Rib Count
“right size, works great”