HomeBelts and Cooling > Radiators, Coolers and Related ComponentsRein EPK0138 Engine Coolant Reservoir Kit
Part #: EPK0138

Rein EPK0138 Engine Coolant Reservoir Kit

N/A
⚙️ 6 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$73.78Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: BMW, X5
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Rein Engine Coolant Reservoir Kit for BMW X5

The Rein Engine Coolant Reservoir Kit (Part Number EPK0138) is designed specifically for BMW X5 models. This application-specific expansion tank kit ensures proper coolant management and system reliability under varying heat cycles.

Key Features of Rein EPK0138 Expansion Tank Kit

  • Includes sensor and cap where applicable for complete installation
  • Manufactured from virgin plastic that meets or exceeds original equipment specifications
  • Resistant to cracking and wear caused by repeated heat cycles, preventing coolant leaks
  • Direct fitment design allows for straightforward replacement without modifications

Detailed Product Description

The Rein Engine Coolant Reservoir Kit is engineered to maintain optimal coolant levels and pressure within the cooling system of BMW X5 vehicles. Constructed from high-quality virgin plastic, this expansion tank withstands the thermal stresses typical in engine compartments, reducing the risk of cracking and premature failure. The kit includes all necessary components such as the sensor and cap, ensuring compatibility and ease of installation. Its direct fitment design aligns precisely with factory mounting points, facilitating a hassle-free replacement process.

Common Issues Addressed by This Expansion Tank Kit

  • Coolant leaks caused by cracked or worn reservoir tanks
  • Inaccurate coolant level readings due to faulty sensors
  • Overheating issues related to improper coolant containment
  • Pressure loss in the cooling system affecting engine performance
  • Degradation of plastic components from heat cycling

Installation Notes and Tips

  • Ensure the vehicle is cool before beginning installation to avoid injury
  • Verify sensor connections and cap fitment during assembly
  • Use OEM or equivalent coolant to maintain system integrity
  • Check for leaks after installation and during initial engine operation
  • Follow BMW X5 service manual guidelines for torque specifications and procedures

Quality Assurance and Warranty Information

Rein expansion tanks are produced to meet or exceed original equipment standards, ensuring durability and performance. Manufactured from virgin plastic, the EPK0138 kit is resistant to heat-related wear and cracking. While specific warranty details may vary, Rein products typically come with a limited warranty covering defects in materials and workmanship. Consult product documentation or supplier for exact warranty terms.

BrandRein
Part NumberEPK0138
Application TypeApplicationSpecific
Container TypeBX
Country of OriginCN
Item Height7.0800
Item Length10.6200
Item Level GTIN888544078897
Item Qty1
Item UOMEA
Item Weight2.1400
Item Weight Unit UOMLB
Item Width8.6600
Link to Manufacturer Pagewww.reinautomotive.com
Product Desc Extended 240Rein OE quality expansion tanks are designed to handle heat cycles and resist cracking. These tanks are produced from virgin plastic with no regrind to ensure the plastic is durable and will have a long service life
Product Desc Invoice 40Rein Expansion Tank Kit
Product Desc Long 80Rein OE Quality Expansion Tank Kit
Product Desc Short 20Expansion Tank Kit

This part fits 6 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2006BMWX54.4LV8N/A
2006BMWX54.8LV8N/A
2005BMWX54.4LV8N/A
2005BMWX54.8LV8N/A
2004BMWX54.4LV8N/A
2004BMWX54.8LV8N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.