1. Engine Cooling Components Deals
  2. sku: 20314155259211892
  3. REIN SX-K8J0

REIN SX-K8J0 Engine Water Pump Plug Xdrive Belts 3.0L L6

fits make: Bmw. year: 2017–2019.

Sx-k8j0 Rein Engine Water Pump Plug For 2017-2019 Bmw 740i Xdrive 3.0l L6 Belts Bn

( Brand: Rein ), ( Manufacturer Part Number: SX-K8J0 ), ( Ipn: C213 20-11 ), ( Placement On Vehicle: Belts Cooling Hardware Fasteners Fittings ), ( Compatible Model: 740i Xdrive ), ( Compatible Year: 2019 2018 2017 ), ( Core Charge: Free No Core Charge ), ( Type: Engine Water Pump Plug ), ( Universal Fitment: Direct Replacement ), ( Bundle Description: 1 Pc Genuine Rein Engine Water Pump Plug )

Review REIN Engine Water Pump Plug Bmw Xdrive 3.0l L6 Belts Bn fits 740I 2017–2019

The **REIN SX-K8J0 Engine Water Pump Plug** is a precision-engineered replacement component meticulously designed to restore optimal cooling system performance in the **2017 2019 BMW 740i xDrive (N74) with the 3.0L inline-6 turbocharged engine**. Crafted from high-grade **aluminum alloy**, this water pump plug is engineered to withstand the demanding thermal and mechanical stresses of BMW s advanced cooling architecture, ensuring reliable operation under high-performance conditions. The plug features a **threaded interface** compatible with the original equipment manufacturer (OEM) specifications, guaranteeing a secure and leak-free fitment when paired with the REIN SX-K8J0 water pump assembly. Its **precision-machined design** aligns perfectly with the engine s serpentine belt system, including the **3.0L L6 turbocharged powertrain s auxiliary drive components**, such as the alternator, power steering pump, and air conditioning compressor. Built to meet or exceed OEM durability standards, this plug is resistant to corrosion and thermal degradation, making it an ideal long-term solution for enthusiasts and mechanics seeking a direct replacement that maintains factory performance. Whether installed as part of a full cooling system overhaul or a targeted repair, the REIN SX-K8J0 plug ensures seamless integration with the **REIN SX-K8J0 water pump**, which is specifically tuned for the 740i s cooling demands, including the **xDrive all-wheel-drive system s additional heat dissipation requirements**. With its **universal compatibility** and **OEM-level quality**, this component is a trusted choice for maintaining the cooling efficiency and longevity of BMW s sophisticated 3.0L turbocharged inline-6 engine.

### Pros and Cons of buying a **Rein SX-K8J0 Engine Water Pump Plug for 2017-2019 BMW 740i XDrive 3.0L L6 Belts**

#### **Pros:**

1. **OEM Compatibility** The Rein SX-K8J0 is designed to match the original equipment specifications for your BMW 740i, ensuring proper fitment and functionality. This reduces the risk of compatibility issues that can arise with aftermarket parts that are not precisely engineered for your vehicle s engine bay layout.

2. **High-Quality Materials** Rein is known for using durable materials in their components, which can improve longevity compared to lower-quality alternatives. The water pump plug is likely constructed to withstand the thermal and mechanical stresses of the engine bay, reducing the likelihood of premature failure.

3. **Simplified Installation** The plug is part of the serpentine belt system, and Rein s products are often designed with user-friendliness in mind. This can make the installation process easier, especially for those who are not highly experienced with engine repairs. Clear instructions and tooling requirements are typically well-documented.

4. **Cost-Effective Alternative to OEM** While not an exact OEM part, Rein offers a more affordable option than purchasing a genuine BMW water pump plug. This can be particularly beneficial if you are on a budget or if the OEM part is difficult to source quickly.

5. **Warranty and Support** Rein provides warranties on their products, which can offer peace of mind. Additionally, their customer service is often responsive, which can be helpful if you encounter issues during installation or after purchase.

6. **Compatibility with Other Rein Belts** If you are also purchasing a serpentine belt kit from Rein, this plug will integrate seamlessly with the rest of the system. This ensures that all components work together harmoniously, reducing the risk of misalignment or premature wear.

7. **Positive User Feedback** Many BMW owners report positive experiences with Rein products, citing reliability and ease of installation. This can be a strong indicator of the product s quality, especially when compared to lesser-known brands.

---

#### **Cons:**

1. **Not a Genuine OEM Part** While Rein is a reputable brand, their parts are not manufactured by BMW. This means there is a slight risk that the plug may not match the exact tolerances or performance characteristics of the original part. Over time, this could lead to minor inefficiencies or, in rare cases, compatibility issues.

2. **Potential for Lower Durability** Although Rein uses high-quality materials, some users have reported that aftermarket parts, even from well-regarded brands, may not last as long as OEM components. If the water pump plug is part of a critical cooling system, this could be a concern if the part fails unexpectedly.

3. **Limited Availability of Spare Parts** If you encounter issues with the plug, Rein may not offer the same level of spare part availability as BMW dealerships. This could complicate repairs if the plug fails shortly after installation.

4. **Installation Complexity** While Rein products are generally user-friendly, installing a water pump plug especially in a complex engine bay like the BMW 740i can still be challenging. If you are not comfortable with mechanical work, you may need to hire a professional, which adds to the cost.

5. **Mixed Reviews on Longevity** Some owners have reported that while Rein parts are reliable, they may not consistently match the longevity of OEM components. This is particularly relevant for high-mileage vehicles or those used in demanding conditions (e.g., towing, extreme temperatures).

6. **Potential for Misalignment** If the plug is not installed perfectly, it could cause tension issues with the serpentine belt system. This could lead to premature wear on the belt or other pulleys, requiring additional maintenance.

7. **Brand Reputation Variability** While Rein is generally well-regarded, individual experiences can vary. Some users have reported receiving counterfeit or lower-quality parts despite purchasing from authorized sellers. Always verify the authenticity of the product and purchase from trusted retailers.

---

### **Ending Conclusion:**

The **Rein SX-K8J0 water pump plug** is a solid choice for your 2017-2019 BMW 740i XDrive 3.0L L6 serpentine belt system, offering a balance of affordability, quality, and ease of installation. It is a practical alternative to OEM parts for those who prioritize cost savings without sacrificing too much in terms of reliability. However, it is not a perfect substitute for genuine BMW components, and users should be aware of the potential trade-offs in durability and long-term performance.

If you are comfortable with aftermarket parts and have done your due diligence to ensure the product s authenticity, Rein is a reasonable option. For maximum peace of mind, especially if you plan to keep the vehicle for an extended period, you may consider pairing this with a high-quality serpentine belt kit and monitoring the system closely during the initial months of use.

---

### **Recommendation:**

1. **Purchase from an Authorized Retailer** Buy the Rein SX-K8J0 plug from a reputable online retailer (e.g., Amazon, RockAuto, or a trusted BMW parts dealer) to avoid counterfeit products. Check reviews and seller ratings to ensure legitimacy.

2. **Pair with a Quality Belt Kit** If you are replacing the entire serpentine belt system, consider using a premium belt kit (e.g., Gates or Dayco) alongside the Rein plug to maximize reliability. This ensures that all components are compatible and optimized for performance.

3. **Follow Installation Guidelines Carefully** Take your time during installation. Ensure the plug is securely fastened and properly aligned with the belt system. Refer to your vehicle s service manual or a trusted online guide (e.g., BMW-specific forums) for step-by-step instructions.

4. **Monitor the System Post-Installation** After installation, keep an eye on the engine bay for any unusual noises (e.g., squealing or grinding) or warning signs (e.g., overheating). If you notice any issues, address them promptly to prevent further damage.

5. **Consider OEM for Critical Upgrades** If you are concerned about longevity or performance, you may opt for an OEM water pump plug, especially if you are also replacing the water pump itself. While more expensive, OEM parts often provide the highest level of reliability.

6. **Maintain Regular Intervals** Follow BMW s recommended maintenance intervals for belt and pulley inspections. Even with aftermarket parts, proactive maintenance can extend the life of your serpentine belt system.

**Final Verdict:** The Rein SX-K8J0 is a **good aftermarket option** for your BMW 740i, provided you purchase it from a trusted source and are prepared to monitor its performance. For those seeking the absolute best in durability and compatibility, an OEM part may be worth the investment, but for most owners, Rein offers a cost-effective and reliable alternative.

Details:

Rein Engine Water Pump Plug for 2017 - 2019 BMW 740I xDrive 3.0L L6 Belts bn: Status: In Stock.

part #: sxk8j0 prices

  • $15.63-$19.69

specifications ocoosys:

  • for makes: Bmw
  • for years: 2017-2019
  • brand: Rein
  • mpn: Sx-k8j0
  • ipn: C213 20-11
  • placement on vehicle: Belts Cooling Hardware Fasteners Fittings
  • compatible model: 740i Xdrive
  • compatible year: 2019 2018 2017
  • core charge: Free No Core Charge
  • type: Engine Water Pump Plug
  • universal fitment: Direct Replacement
  • bundle description: 1 Pc Genuine Rein Engine Water Pump Plug

seller ocoosys:

  • # reviews: 631617
  • rating: 99.5%
  • city: Indianapolis, Indiana

returns ocoosys:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller

shipping ocoosys:

  • service: Standard, Expedited
  • class: Standard, Expedited
  • transit: 3-6 Days
  • cost: $0.00
  • type: Fixed

offer ocoosys:

  • started: March 11, 2026
  • sold: 0
  • options: Ship-to-home
  • availability: In Stock
  • quantity: 10

general ocoosys:

  • Car Truck Parts Accessories > Engine Cooling Components > Other Engine Cooling Components
  • condition: New

payments ocoosys:

  • other
  • wallet: Google-pay
  • credit card: Mastercard
for makes: bmw, for years: 2017-2019, placement on vehicle: belts cooling hardware fasteners fittings, compatible model: 740i xdrive, compatible year: 2019 2018 2017, core charge: free no core charge, type: engine water pump plug, universal fitment: direct replacement, bundle description: 1 pc genuine rein engine water pump plug,
category: auto parts > car truck parts accessories > engine cooling components, sku: 20314155259211892,
Rein SX-K8J0 Is Similar To:
ocoosys logo
2 offers $15.63–$19.69 USD
  • New. Offer #1 priced at $19.69 + $0.00 shipping estimate = $19.69* total. FREE SHIPPING
  • New. Offer #2 priced at $15.63 + $0.00 shipping estimate = $15.63* total. FREE SHIPPING

Copyright © ocoosys.com