Rein CHK0021P Radiator Coolant Hose Kit - Lower

Brand Rein CHK0021P
Position Lower
Application Type Application Specific
Centerline Length Inches 17.7200
Centerline Length Metric 45.0088000
Color Black
Container Type BG
Country of Origin DE
Heat Shield Inc No
Hose End 1 Inside Diameter Inches 1.8100
Hose End 1 Inside Diameter Metric 4.5974000
Hose End 1 Outside Diameter Inches 2.0500
Hose End 1 Outside Diameter Metric 5.2070000
Hose End 2 Inside Diameter Inches 0.8300
Hose End 2 Inside Diameter Metric 2.1082000
Hose End 2 Outside Diameter Inches 0.9500
Hose End 2 Outside Diameter Metric 2.4130000
Hose Material EPDM
Hose Type Single
Industry Standards SAE J20R4 -D1
Item Height 3.5000
Item Length 15.7500
Item Level GTIN 843266038383
Item Qty 1
Item UOM EA
Item Weight 0.6850
Item Weight Unit UOM LB
Item Width 6.0000
Link to Manufacturer Page www.reinautomotive.com
Maximum Working Pressure 50.0000
Product Desc Invoice 40 Rein Radiator Hose Kit
Product Desc Long 80 Rein OE Quality Radiator Hose Kit
Product Desc Short 20 Radiator Hose Kit
Protective Shield Inc No
Qty of Quick Connect Fittings 2
Tech Note Complete OE Quality Direct Fit European Hose
Fits BMW · 6 vehicles

OE quality direct fit. Matches the original hose assembly for a straightforward replacement.

Preinstalled temperature sensor. Helps reduce installation time and avoids reusing the old sensor.

EPDM hose material. Built to resist heat, salt, road debris, oil, and other contaminants.

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Order total $57.88
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Free returns within 60 days if it doesn't fit when fitment is verified.

OE-Style Lower Radiator Hose Kit

Rein CHK0021P is an OE quality radiator coolant hose kit for European cooling systems that require a direct-fit lower hose assembly. It is built for the 2001-2006 BMW X5 lower position and includes the temperature switch and quick connectors already in place for a cleaner replacement.

For BMW X5 cooling system service, CHK0021P follows the original hose shape and branch layout so the replacement matches the factory routing without cutting, refitting, or adjusting the hose.

Key Features

  • Application-specific lower radiator coolant hose for 2001-2006 BMW X5
  • Preinstalled temperature sensor helps reduce repeat repairs from reusing old sensors
  • Direct OE-style replacement with thermoplastic quick-connect fittings
  • EPDM hose construction resists heat, salt, road debris, oil, and other contaminants
  • Built to SAE J20R4 -D1 standards
  • Black hose finish with a direct-fit layout for European vehicle cooling systems

Detailed Product Overview

Rein CHK0021P is a radiator coolant hose kit engineered for European vehicles that need an OE-quality lower hose replacement. The hose is shaped to match the original assembly, including the branch geometry and connector style, and the temperature sensor is preinstalled to avoid reusing an aged sensor during service. This makes CHK0021P a practical choice for BMW X5 lower radiator hose replacement work where factory-style fit and reliable sealing matter.

This part cross-references no listed aftermarket part numbers for the same application. Fits 2001-2006 BMW X5, lower.

Common Problems This Part Can Address

  • Coolant leaks at worn hose ends or quick-connect interfaces
  • Repeat repairs caused by reusing old temperature sensors
  • Fitment issues from hoses that require trimming or refitting
  • Cooling system contamination damage from aged rubber components
  • Service delays caused by mismatched OE-style hose routing

Installation Notes and Tips

Install CHK0021P as a direct replacement for the lower radiator hose assembly on the listed BMW X5 applications. Verify connector engagement, sensor connection, and hose routing before refilling the cooling system. Because the hose is application-specific, no cutting or adjustment should be required when installed on the correct vehicle.

Quality Assurance

Rein positions this hose as an OE-quality replacement for European vehicles, with dimensions and connector design matched to the original assembly. The preinstalled temperature sensor and OE-style quick-connect fittings are intended to support a factory-like repair on the 2001-2006 BMW X5 lower cooling circuit.

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2006BMWX53.0LL6LowerIncludes temperature switch and quick connectors
2005BMWX53.0LL6LowerIncludes temperature switch and quick connectors
2004BMWX53.0LL6LowerIncludes temperature switch and quick connectors
2003BMWX53.0LL6LowerIncludes temperature switch and quick connectors
2002BMWX53.0LL6LowerIncludes temperature switch and quick connectors
2001BMWX53.0LL6LowerIncludes temperature switch and quick connectors