25CVZFM98 Rear Crankshaft Seal

( Manufacturer Part Number: 25CVZFM98 ), ( Type: Crankshaft Seal ), ( Placement On Vehicle: Rear ), ( Fits 1: 2003-2007 Infiniti G35 ), ( Fits 2: 2003-2008 Infiniti Fx35 ), ( Fits 3: 2001-2003 Infiniti Qx4 ), ( Fit Note: Engine Oil Pump Seal 3.5l V6; Rear Crankshaft Seal With Fla. ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Please Read All Notes To Confirm Fitment ), ( Cs-sku: 400 )

Review Replacement Rear Crankshaft Seal fits G35 FX35 QX4 I35 M35 2001–2006

The **25CVZFM98 Rear Crankshaft Seal** is a precision-engineered, high-performance sealing component specifically designed to maintain optimal engine integrity for Mercedes-Benz models spanning the **2001 2006** generations, including the **G35 (3.5L V6), FX35 (3.5L V6), QX4 (3.5L V6), I35 (3.5L V6), and M35 (3.5L V6)**. Crafted from a **high-quality, oil-resistant elastomer compound**, this seal is engineered to withstand the demanding conditions of a high-revving, high-performance engine while ensuring a reliable barrier against oil leaks and contamination. The **metal-reinforced lip design** provides exceptional durability, resisting deformation under pressure and maintaining a tight seal even after prolonged use, which is critical for preventing oil seepage into the transmission or differential housing. This seal is meticulously manufactured to fit seamlessly within the **rear main seal housing**, where it interfaces directly with the crankshaft, ensuring a perfect alignment that minimizes friction and wear over time. Its **robust construction** and **superior sealing properties** make it an ideal replacement for the factory-sealed component, helping to restore engine efficiency, prevent costly transmission damage, and extend the lifespan of your vehicle s drivetrain. Whether you're addressing a slow oil leak, preparing for a major service, or upgrading for enhanced reliability, this **OEM-quality rear crankshaft seal** delivers the performance and longevity expected from Mercedes-Benz s most demanding applications.

### Pros and Cons of buying a **25CVZFM98 Rear Crankshaft Seal** for Toyota Models (G35, FX35, QX4, i35, M35, 2001 2006)

1. **OEM-Quality Fitment** This part is an original Toyota replacement, ensuring a precise fit with no modifications required. It is designed to match the specifications of the original equipment, reducing the risk of leaks or improper sealing.

2. **Reliability** Toyota s aftermarket parts, especially those from authorized suppliers, are generally built to high standards. A quality seal like this should provide durable performance, reducing the likelihood of premature failure.

3. **Ease of Installation** Since it is a direct replacement, installation should be straightforward if you have mechanical experience or access to professional help. No customization or additional tools are typically needed beyond standard automotive equipment.

4. **Compatibility with Multiple Models** The part is designed for a range of Toyota models (G35, FX35, i35, etc.) from 2001 2006, making it a versatile choice if you re unsure of the exact variant or if you plan to use it for future reference.

5. **Prevents Engine Damage** A failing rear crankshaft seal can lead to oil leaks into the transmission or differential, causing long-term damage. Replacing it proactively can save you from costly repairs down the line.

6. **Warranty Coverage** Purchasing from a reputable supplier (e.g., Toyota dealership, authorized parts distributor, or trusted online retailers) may include a warranty, offering peace of mind against defects.

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1. **Cost** OEM or high-quality aftermarket seals can be more expensive than generic or budget alternatives. Depending on the supplier, prices may range from moderate to high, which could be a consideration for DIYers on a tight budget.

2. **Potential Counterfeit Risks** If purchased from untrusted sources (e.g., unregulated online marketplaces), there is a risk of receiving a counterfeit or low-quality part. Always verify the seller s reputation and authenticity of the product.

3. **Labor Intensity** While the seal itself is simple, removing the old seal and installing the new one often requires disassembling parts of the drivetrain (e.g., the transmission or differential). This can be time-consuming and may require specialized tools or expertise.

4. **Mixed Reviews on Longevity** Some users report that even OEM seals may not last indefinitely, especially in high-mileage or performance vehicles. Factors like driving habits, oil quality, and maintenance can affect longevity.

5. **Limited Availability Offline** If you re purchasing from a physical store, this specific part may not always be in stock, requiring an order or special request. Online retailers offer broader availability but may involve shipping delays.

6. **Potential for Overkill** If your vehicle has minimal signs of seal wear (e.g., no visible oil leaks or unusual noises), replacing it preemptively may not be immediately necessary. Over-replacing parts can lead to unnecessary expenses.

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The **25CVZFM98 rear crankshaft seal** is a solid choice for Toyota owners needing a reliable, direct replacement for their 2001 2006 models. Its OEM quality, compatibility, and preventative benefits make it a practical solution for addressing or preventing leaks. However, the higher cost and potential labor involved should be weighed against the risks of neglecting the issue. If you re experiencing symptoms like oil leaks, whining noises, or transmission fluid contamination, replacing the seal is a wise investment to avoid greater damage.

- **Verify the part s authenticity** by purchasing from authorized dealers or trusted online retailers (e.g., Toyota Parts Network, RockAuto, or local Toyota service centers).

- **Consider professional installation** if you lack experience with drivetrain disassembly, as improper handling can lead to further complications.

- **Combine the replacement with a full inspection** of related components (e.g., gaskets, seals, and fluid levels) to ensure long-term reliability.

If you re confident in your mechanical skills and the vehicle shows clear signs of seal failure, proceed with the purchase and installation. For those unsure about symptoms or installation, consult a mechanic to confirm the need and handle the replacement. Always prioritize quality over cost to avoid repeated failures.

Details:

2002- 2004 Infiniti I35 3.5L V6. 2006 2008 Infiniti M35 3.5L V6. 2007 Infiniti G35 3.5L V6 VQ35DE. 2001 - 2003 Infiniti QX4 3.5L V6.

part #: 25cvzfm98 price

• $34.16

specifications cranshafengin:

• for models: G35, Fx35, Qx4, I35, M35
• for years: 2001-2006
• mpn: 25cvzfm98
• type: Crankshaft Seal
• placement on vehicle: Rear
• fits 1: 2003-2007 Infiniti G35
• fits 2: 2003-2008 Infiniti Fx35
• fits 3: 2001-2003 Infiniti Qx4
• fit note: Engine Oil Pump Seal 3.5l V6; Rear Crankshaft Seal With Fla.
• manufacturer warranty: 12 Month Warranty
• attention: Please Read All Notes To Confirm Fitment
• cs-sku: 400

general cranshafengin:

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

offer cranshafengin:

• sold: 0
• options: Ship-to-home
• quantity: 1
• started: May 14, 2026
• availability: In Stock

shipping cranshafengin:

• type: Fixed
• cost: $0.00
• class: Standard
• transit: 2-6 Days
• service: Standard

returns cranshafengin:

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

payments cranshafengin:

• credit card: Discover
• other
• wallet: Paypal

seller cranshafengin:

• rating: 97.3%
• city: Green Harbor, Massachusetts
• # reviews: 58011

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