ITM 85GSDXC99 Rear Crankshaft Seal

( Brand: Itm ), ( Manufacturer Part Number: 85GSDXC99 ), ( Type: Crankshaft Seal ), ( Placement On Vehicle: Rear ), ( Fits 1: 2004-2006 Lexus Rx330 ), ( Fits 2: 1990-1991 Lexus Es250 ), ( Fits 3: 1992-1995, 1999-2003 Lexus Es300 ), ( Fit Note: Engine Crankshaft Seal ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Please Read All Notes To Confirm Fitment ), ( Cs-sku: 400 )

Review ITM Rear Crankshaft Seal fits RX330 ES250 ES300 ES330 GS350 GS450H IS350

The **ITM 85GSDXC99 Rear Crankshaft Seal** is a high-performance, precision-engineered sealing solution meticulously designed to restore optimal function and longevity to the rear main seal in Honda s iconic GS-series motorcycles, including the **RX330, ES250, ES300, ES330, GS350, GS450H, and IS350**. Crafted from durable, oil-resistant **NBR (Nitrile Butadiene Rubber)** with a reinforced steel spring, this seal is engineered to withstand the demanding pressures and temperatures generated by these engines while ensuring a leak-free, smooth-running drivetrain. The **85GSDXC99** features a **precision-machined lip design** that guarantees a perfect seal against the crankshaft, preventing oil leaks that can compromise engine performance and lead to costly internal damage. Its **universal fitment** across multiple GS-series models makes it an ideal replacement for OEM seals that may degrade over time due to wear, heat, or exposure to fuel and lubricants. Whether addressing a slow oil leak, preparing for a rebuild, or upgrading for enhanced reliability, this seal delivers a robust, long-lasting solution that aligns with Honda s engineering standards while offering superior durability. Built to endure the rigors of daily riding, track use, or extended storage, the ITM 85GSDXC99 ensures a tight, consistent seal that minimizes friction and maintains crankshaft integrity, making it an essential component for any serious rider looking to preserve their motorcycle s performance and extend its service life.

### **Pros and Cons of buying a ITM 85GSDXC99 Rear Crankshaft Seal for Honda ES250/ES300/ES330, RX330, GS350, GS450H, and IS350**

1. **Compatibility** The ITM 85GSDXC99 is specifically designed for multiple Honda models, including the ES250/ES300/ES330, RX330, GS350, GS450H, and IS350. This ensures a proper fit without modification, reducing the risk of installation errors.

2. **High-Quality Material** ITM (International Truck Parts) is known for using durable materials, including reinforced rubber and metal reinforcement, which improves longevity compared to OEM seals that may degrade faster under heat and stress.

3. **Improved Reliability** Many aftermarket seals, including ITM s, are engineered to resist oil leakage better than stock seals, which can fail prematurely due to wear or improper installation.

4. **Easier Installation** The seal is designed with a smooth, tapered lip that makes installation less prone to damage compared to some OEM seals, which can be brittle or difficult to seat properly.

5. **Cost-Effective Alternative** While not the absolute cheapest option, ITM seals are often more affordable than OEM replacements, especially when purchasing in bulk or from authorized dealers.

6. **Widely Available** As a popular aftermarket brand, the ITM 85GSDXC99 is easy to find in online marketplaces, auto parts stores, and through Honda specialty shops.

7. **Positive User Feedback** Many riders report fewer leaks and longer service life with ITM seals compared to stock or generic aftermarket alternatives, particularly in high-mileage or heavily used bikes.

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1. **Potential Overkill for Low-Mileage Bikes** If the bike has very low mileage and the original seal was still in good condition, replacing it with an aftermarket seal may not be necessary, adding unnecessary cost.

2. **Installation Skill Required** While the seal itself is easier to install than some OEM alternatives, improper handling during installation (e.g., cross-threading, improper torque) can still lead to leaks or damage.

3. **Price Variability** Prices can fluctuate depending on the seller, with some online marketplaces charging premiums for "new" or "OEM-quality" aftermarket parts. Always compare prices to ensure a fair deal.

4. **Limited Warranty (If Any)** Unlike OEM parts, ITM seals typically come with a limited warranty (often 30 90 days), which may not cover long-term wear or improper installation.

5. **Risk of Counterfeit Parts** Purchasing from untrusted sellers (e.g., eBay without seller verification, unknown online stores) increases the chance of receiving a fake or low-quality seal that fails quickly.

6. **Not a Permanent Fix for Underlying Issues** If the bike has other problems (e.g., worn bearings, improper alignment, or oil leaks from other sources), replacing just the seal may not solve the issue permanently.

7. **Slightly Thicker Than OEM in Some Cases** Some riders report that aftermarket seals, including ITM s, may be slightly thicker than stock seals, which could require minor adjustments during installation (e.g., shimming or careful alignment).

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### **Conclusion**

The **ITM 85GSDXC99 rear crankshaft seal** is a **strong aftermarket alternative** for Honda ES, RX, GS, and IS models, offering **better durability, easier installation, and wider availability** than OEM seals. It is particularly beneficial for **high-mileage bikes, performance-oriented riders, or those experiencing frequent leaks**. However, it may not be the best choice for **low-mileage bikes with no existing issues**, as the cost and effort may not be justified.

For most riders dealing with **leaks, worn seals, or preventative maintenance**, the ITM seal is a **reliable and cost-effective upgrade**. However, always **verify the seller s reputation**, **inspect the seal upon arrival**, and **follow proper installation procedures** to maximize its lifespan.

### **Recommendation**

- **Buy from a trusted source** (e.g., official ITM dealers, reputable online retailers like RockAuto, or Honda specialty shops).

- **Check for leaks or damage** before installation replace if the seal is cracked or degraded.

- **Follow installation guidelines carefully**, including proper torque and alignment to prevent leaks.

- **Consider pairing with a high-quality oil filter and proper maintenance** to extend the seal s life.

- **If the bike is low-mileage and the original seal is intact**, weigh the cost against the potential benefits before replacing it.

**Final Verdict:** The ITM 85GSDXC99 is a **solid aftermarket choice** for Honda riders needing a reliable rear crankshaft seal, especially for bikes with higher mileage or leak issues. For most cases, it is **worth the upgrade** over OEM or generic alternatives.

Details:

1990 1991 Lexus ES250 2.5L V6. Vehicle Engine, FItment Notes: Replacement seal does not contain mounting plate or gasket. 2004 2006 Lexus ES330 3.3L V6.

part #: 85gsdxc99 price

• $27.09

specifications cranshafengin:

• for models: Rx330, Es250, Es300, Es330, Gs350, Gs450h, Is350
• brand: Itm
• mpn: 85gsdxc99
• type: Crankshaft Seal
• placement on vehicle: Rear
• fits 1: 2004-2006 Lexus Rx330
• fits 2: 1990-1991 Lexus Es250
• fits 3: 1992-1995, 1999-2003 Lexus Es300
• fit note: Engine Crankshaft Seal
• manufacturer warranty: 12 Month Warranty
• attention: Please Read All Notes To Confirm Fitment
• cs-sku: 400

shipping cranshafengin:

• class: Standard
• transit: 4-8 Days
• cost: $0.00
• type: Fixed
• service: Standard

payments cranshafengin:

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

returns cranshafengin:

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

general cranshafengin:

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

seller cranshafengin:

• city: Gardena, California
• rating: 97.3%
• # reviews: 57958

offer cranshafengin:

• quantity: 1
• started: May 12, 2026
• options: Ship-to-home
• sold: 0
• availability: In Stock

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