NIPPON REINZ G601-11-399 Rear Crankshaft Seal

( Brand: Nippon Reinz ), ( Manufacturer Part Number: G601-11-399 ), ( Part Type: Seal Crankshaft ), ( Product Type: Engine ), ( Fitment Type: Direct Replacement ), ( Compatible Model S : Mpv, B2600 ), ( Product Subtype: Crankshafts ), ( Placement On Vehicle: Rear ), ( Product Details: Engine Crankshaft Seal ), ( Department: Replacement )

Review NIPPON REINZ Mazda Rear Crankshaft Seal fits MPV 1989–1994

The **Nippon Reinz G601-11-399** is a premium, high-performance rear crankshaft seal designed specifically for Mazda MPV models produced between **1989 and 1994**, ensuring a reliable and long-lasting solution for maintaining engine integrity. Engineered with Nippon Reinz s signature precision and durability, this seal is crafted from **high-quality synthetic rubber** reinforced with a **steel spring retainer**, which provides optimal sealing performance while resisting oil leakage, heat, and mechanical stress. The seal s **precision-molded design** guarantees a perfect fit within the Mazda MPV s rear main housing, minimizing the risk of oil contamination in the transmission or differential, thereby protecting critical drivetrain components from premature wear. Its **self-lubricating properties** and **resistance to ozone, aging, and fuel-based degradation** make it an ideal choice for both high-mileage vehicles and those subjected to demanding driving conditions. Whether addressing a leaky seal in a classic MPV or performing a routine maintenance upgrade, the **G601-11-399** delivers exceptional longevity and peace of mind, ensuring seamless operation and extended engine life for your vehicle.

The **Nippon Reinz G601-11-399** is a high-quality rear crankshaft seal designed for Mazda MPV models from 1989 to 1994. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

### **Pros of the Nippon Reinz G601-11-399**

1. **Premium Quality and Durability** Nippon Reinz is a well-known manufacturer of high-performance seals, known for using superior materials and precise engineering. This seal is designed to withstand higher temperatures and mechanical stress compared to standard OEM or aftermarket alternatives.

2. **Longer Lifespan** Due to its robust construction, this seal is less likely to leak oil or fail prematurely, reducing the need for frequent replacements. Many users report it lasting significantly longer than generic or budget seals.

3. **Better Oil Containment** The seal s design includes advanced lip technology that provides a tighter seal, minimizing oil leaks especially important for older vehicles prone to crankshaft seal wear.

4. **Compatibility with Mazda MPV (1989-1994)** This specific part number is engineered to fit the rear crankshaft seal application in these models, ensuring proper alignment and function without modifications.

5. **Reduced Engine Wear** A failing crankshaft seal can allow oil to leak into the transmission or differential, causing contamination and accelerated wear. A high-quality seal like this helps prevent such issues.

6. **Easier Installation** While installation still requires care, Nippon Reinz seals are often designed with user-friendly features (e.g., proper sizing, clear installation instructions) that simplify the process compared to some aftermarket alternatives.

7. **Warranty and Reliability** Nippon Reinz products typically come with a warranty (varies by retailer), and the brand has a strong reputation for reliability, reducing the risk of early failure.

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### **Cons of the Nippon Reinz G601-11-399**

1. **Higher Cost** Compared to generic or OEM replacement seals, this is a premium product, which means a significantly higher upfront cost. For budget-conscious buyers, this may be a deterrent.

2. **Potential Overkill for Some Applications** If the vehicle has minimal oil leaks or the seal failure is minor, a slightly less expensive but still high-quality seal might suffice. However, for older MPVs with known seal issues, the extra cost is often justified.

3. **Installation Skill Required** While not extremely difficult, replacing a rear crankshaft seal requires careful handling to avoid damaging the seal or the engine components. Inexperienced DIYers may struggle, potentially leading to additional costs if professional help is needed.

4. **Limited Availability** Depending on the region, this specific part number may not be as widely stocked as more common OEM or aftermarket alternatives. Purchasing may require ordering from specialty suppliers.

5. **No Guarantee Against All Failure Modes** While rare, no seal is entirely immune to failure, especially if the vehicle has other underlying issues (e.g., worn crankshaft journals, improper installation, or extreme operating conditions).

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### **Conclusion**

The **Nippon Reinz G601-11-399** is an excellent choice for Mazda MPV owners (1989-1994) seeking a long-lasting, high-performance rear crankshaft seal. Its superior quality, durability, and reliability make it a worthwhile investment, particularly for vehicles with a history of oil leaks or those driven under demanding conditions. However, the higher cost and the need for careful installation are factors to consider.

For most owners, the benefits outweigh the drawbacks, especially when compared to cheaper alternatives that may fail sooner and cause more extensive damage. If budget is a concern, it s worth researching slightly less expensive but still reputable brands (e.g., Gates or Victor Reinz), though they may not offer the same level of longevity.

### **Recommendation**

- You prioritize long-term reliability and are willing to pay a premium for a high-quality seal.

- Your Mazda MPV has a history of oil leaks or you want to prevent future issues.

- You are comfortable with or can afford professional installation to ensure proper fitting.

- You are on a tight budget and can find a similarly rated seal (e.g., Gates or Victor Reinz) at a lower price.

- The vehicle has minimal seal-related issues and you prefer to test a less expensive option first.

Ultimately, for the Mazda MPV s rear crankshaft seal application, the **Nippon Reinz G601-11-399 is the best choice for those who want peace of mind and long-term performance**.

Details:

Rear Crankshaft Seal by Nippon Reinz. This product is distinguished by total quality assurance, unsurpassed anybody else. Manufactured to meet or exceed strict quality requirements. Made from high-quality materials for ultimate durability.

Right for your vehicle and lifestyle. Features: designed to deliver trouble-free, consistent performance.

specifications cranshafengin:

• for models: Mpv
• for makes: Mazda
• for years: 1989-1994
• brand: Nippon Reinz
• mpn: G601-11-399
• part type: Seal Crankshaft
• product type: Engine
• fitment type: Direct Replacement
• compatible model s : Mpv, B2600
• product subtype: Crankshafts
• placement on vehicle: Rear
• product details: Engine Crankshaft Seal
• department: Replacement

seller cranshafengin:

• # reviews: 151708
• rating: 99.1%
• city: Shawnee, Kansas

general cranshafengin:

• condition: New
• Car Truck Parts Accessories > Engines Engine Parts > Crankshafts

payments cranshafengin:

• credit card: Mastercard
• other
• wallet: Apple-pay

returns cranshafengin:

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

shipping cranshafengin:

• type: Fixed
• class: Standard
• cost: $15.00
• service: UPS Ground
• carrier: UPS
• transit: 2-4 Days

offer cranshafengin:

• quantity: 2
• availability: In Stock
• sold: 0
• started: March 17, 2026
• options: Ship-to-home

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