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Rein CHK0021P - Radiator Coolant Hose Kit (Lower)
Product Overview
The Rein Radiator Coolant Hose Kit part number CHK0021P offers a reliable solution for maintaining your BMW's cooling system. This premium-grade kit is designed specifically for various BMW models, ensuring optimal performance and longevity of your vehicle. Engineered to OEM standards, the Rein Radiator Coolant Hose Kit is manufactured from high-quality materials that withstand high temperatures and extreme pressure. This durability guarantees that your cooling system is protected, providing you with peace of mind while driving. Choose Rein CHK0021P for dependable performance and peace of mind every time you service your vehicle.
Cross Reference Numbers
This Rein CHK0021P is equivalent to or replaces the following part numbers: 11 53 7 508 688, 11537508688, 13 62 1 433 077, 13621433077.
Vehicle Compatibility
- BMW X5 3.0i (2001–2006)
This may also fit other applications. Please use the vehicle selector tool to verify fitment.
Why Shop at eEuroparts.com?
- Proven Expertise: Over 25 years of experience with European vehicles means we know your car inside and out.
- Exclusive Kits That Fitâ„¢ - complete repair solutions with no guesswork
- Fitment Confidence: Our accurate cataloging ensures you get the right part the first time.
- Fast, Reliable Shipping: Orders ship quickly from our U.S.-based warehouses.
- Transparent Pricing: Competitive prices with no hidden fees or surprise charges.
- Established Trust: Serving the European auto community since 2000.
Frequently Asked Questions
What does the Rein CHK0021P Radiator Coolant Hose Kit do?
The Rein Radiator Coolant Hose Kit is a critical component of your vehicle's cooling system, transporting coolant between the radiator and the engine. It ensures efficient heat exchange, helping to maintain optimal engine temperature and prevent overheating.
How do I know if my Radiator Coolant Hose Kit needs replacement?
Key symptoms that may indicate the need for replacement include visible leaks in the hoses, a rise in engine temperature, coolant loss, or signs of wear such as cracks or bulges in the hoses.
Can I install the Rein CHK0021P myself?
This kit is designed for straightforward installation, making it accessible for DIYers. However, we recommend following all safety precautions and consulting your vehicle's service manual for guidance.
What are the symptoms of a faulty Radiator Coolant Hose Kit?
Symptoms of a failing Radiator Coolant Hose Kit may include overheating, coolant leaks, and engine temperature fluctuations. If you experience these issues, it is advisable to inspect the cooling system and consider replacing the hoses.
Why should I choose Rein for my Radiator Coolant Hose Kit needs?
Rein is known for delivering high-quality automotive parts that meet OEM specifications. Order Rein CHK0021P today for a factory-correct replacement that restores safety and performance.
Note: All information on this page and in the FAQ is for general reference only. Verify fitment and consult a professional as needed. eEuroparts.com is not responsible for incorrect part selection or installation.
- BrandRein
- ManufacturerRein
- MPNCHK0021P
- Part TypeRadiator Coolant Hose Kit
- PositionLower
- OE Part Numbers11 53 7 508 688, 11537508688, 13 62 1 433 077, 13621433077
- FeaturesApplication Type : Application Specific
Bullet Point 1 : Prevents leaks and comebacks from reusing old quick connectors, o-rings and temperature sensors.
Bullet Point 2 : Reduce installation time as the temperature sensor is preinstalled.
Bullet Point 3 : No cutting, refitting or adjusting the hose
Bullet Point 4 : Resistant to heat, salt, road debris, oil and other contaminants
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 Quantity Size : 1
Item Quantity Size UOM : EA
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
Warranty : 2years24000miles
- Fitment
- Fitment TypeVehicle Specific
| Year | Make | Model | Submodel | Notes |
|---|---|---|---|---|
| 2005 | BMW | X5 | 3.0i (3.0 L6 GAS) | Notes: Incl. Temp. Switch, w/Quick Connectors |
| 2006 | BMW | X5 | 3.0i (3.0 L6 GAS) | Notes: Incl. Temp. Switch, w/Quick Connectors |
| 2004 | BMW | X5 | 3.0i (3.0 L6 GAS) | Notes: Incl. Temp. Switch, w/Quick Connectors |
| 2003 | BMW | X5 | 3.0i (3.0 L6 GAS) | Notes: Incl. Temp. Switch, w/Quick Connectors |
| 2002 | BMW | X5 | 3.0i (3.0 L6 GAS) | Notes: Incl. Temp. Switch, w/Quick Connectors |
| 2001 | BMW | X5 | 3.0i (3.0 L6 GAS) | Notes: Incl. Temp. Switch, w/Quick Connectors |
Warranty Overview
At eEuroparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.
Standard Warranty – Most Parts
Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.
Protection: Defects in materials or workmanship under normal personal use.
Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.
Exclusions:
Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)
Commercial, fleet, rideshare, off-road, or racing use
Improper installation, misuse, accidents, or modifications
Not Covered: Labor, shipping, towing, or incidental costs.
Bison Performance Warranty – Our House Brand
Coverage: Limited Lifetime Warranty for as long as you own your vehicle.
Applies To: All products sold under the Bison Performance label.
Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.
Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).
What’s Included: Replacement of the defective product (labor and shipping excluded).
Warranty Claim Requirements
To keep claims fast and fair, we require:
Proof of purchase (invoice or order confirmation).
Photos or videos showing the defective part, order number, date, VIN, and odometer reading.
Diagnostic reports or part returns for non-visible issues may be requested.
Claims must be truthful, properly documented, and reflect normal consumer use.
Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.
For full details and exclusions, please see our complete Warranty Terms & Conditions.
This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.
Return Policy Overview
Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
To start a return, contact customer support via Chat or Contact Us.
Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)
Refunds: Issued to your original payment method within 3–5 business days after inspection
Exchanges: Not automatic — please return and reorder
Replacements: May be approved for incorrect or defective items reported within 7 days
Not returnable:
Used or installed parts
Electrical components
Opened filter kits, gaskets, or contaminated items
Final sale or custom orders
Important Notes:
Return shipping is your responsibility unless we made a verified error
Fitment is the customer’s responsibility (we can assist, but do not guarantee)
Country of origin may vary and is not grounds for return
For complete details, please see our full Return Policy.
This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.
Fast, Reliable Shipping — Straight to Your Door
We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.
We use trusted carriers like UPS, FedEx, and USPS.
Tracking info is emailed to you as soon as your order ships.
Delivery estimates at checkout are based on carrier data, but not guaranteed.
Need help with a shipment?
If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.
For complete details, please see our full Shipping Policy.
This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions, risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.










