CORTECO W0133-1631444-CFW Rear Crankshaft Seal

( Brand: Corteco ), ( Manufacturer Part Number: W0133-1631444-CFW ), ( Part Type: Seal Crankshaft ), ( Product Type: Engine ), ( California Prop 65 Warning: Cancer And Reproductive Harm ), ( Fitment Type: Direct Replacement ), ( Compatible Model S : 944, 928, 924, 911 ), ( Fitnote: Enginevinname ), ( Product Subtype: Crankshafts ), ( Product Details: Engine Crankshaft Seal ), ( Department: Replacement )

Review CORTECO Porsche Rear Crankshaft Seal fits 944 1983–1991

The **Corteco W0133-1631444-CFW** is a premium, high-performance rear crankshaft seal designed specifically for Porsche 944 models produced between 1983 and 1991. Engineered to meet the demanding requirements of this iconic sports car s 2.5-liter flat-six engine, this seal is crafted from Corteco s proprietary **high-quality nitrile rubber compound**, reinforced with a durable metal backing for optimal durability and leak resistance. The precision-engineered design ensures a perfect fit within the engine bay s tight confines, minimizing the risk of oil leaks while maintaining reliable sealing performance under the high temperatures and pressures inherent to Porsche s performance-oriented powertrain. Unlike generic aftermarket alternatives, this seal incorporates Corteco s **advanced sealing lip technology**, which adapts seamlessly to the crankshaft s surface, reducing friction and extending both the seal s lifespan and the engine s overall longevity. Ideal for both maintenance and restoration projects, the W0133-1631444-CFW is a direct-fit replacement, eliminating the need for modifications or compromises in fitment. Whether addressing a leaking seal in a classic 944 or upgrading during a thorough engine service, this seal delivers the reliability and performance enthusiasts expect from Corteco a brand synonymous with precision engineering and automotive excellence.

### **Pros and Cons of buying a Corteco W0133-1631444-CFW Rear Crankshaft Seal for a Porsche 944 (1983 1991)**

1. **OEM-Quality Replacement** Corteco is a well-regarded aftermarket brand that produces parts designed to meet or exceed original equipment manufacturer (OEM) standards. Their seals are engineered to fit precisely, reducing the risk of leaks or premature failure compared to generic or low-quality alternatives.

2. **Durability and Reliability** The W0133-1631444-CFW is specifically designed for Porsche 944 models from 1983 to 1991, ensuring compatibility with the engine s crankshaft and housing. Corteco seals are known for their robust construction, often using high-quality materials like nitrile or EPDM rubber with reinforced metal or fiber backing to resist oil pressure and temperature fluctuations.

3. **Ease of Installation** Corteco parts are typically designed with installation in mind, often featuring clear labeling, proper sizing, and sometimes tooling aids (e.g., grooves for proper seating). This can simplify the replacement process, especially for DIYers who may not have extensive experience with crankshaft seal work.

4. **Warranty and Support** Corteco offers warranties on many of its products, providing some assurance against defects. Additionally, the brand has a reputation for customer support, which can be helpful if issues arise post-installation.

5. **Cost-Effective Alternative to OEM** While not an exact OEM part, Corteco s seal is often priced lower than genuine Porsche OEM replacements (which can be difficult to source and expensive). This makes it a practical choice for budget-conscious owners without sacrificing quality.

6. **Compatibility with Aftermarket Mods** If you ve modified your 944 (e.g., turbocharging, forced induction, or high-performance tuning), a high-quality seal like this one can better withstand increased stress and temperatures compared to cheaper options.

7. **Positive User Feedback** Many owners and mechanics report success with Corteco seals, citing fewer leaks and longer service life compared to other aftermarket brands. Online forums and reviews often highlight its reliability for the 944 s rear main seal application.

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1. **Not a True OEM Part** While Corteco is high-quality, it is not an exact factory replacement. Some purists or owners concerned about longevity may prefer an OEM seal, though these can be hard to find and expensive. However, for most applications, the difference in performance is negligible.

2. **Potential for Counterfeit or Low-Quality Copies** Corteco is a reputable brand, but the aftermarket is rife with counterfeit or knockoff parts sold under similar names or packaging. Always purchase from trusted dealers (e.g., Porsche specialty shops, reputable online retailers like RockAuto, or authorized Corteco distributors) to avoid fakes.

3. **Installation Challenges** Replacing a rear crankshaft seal on a 944 requires removing the transmission, engine, or both, depending on the method. Even with a Corteco seal, the job is labor-intensive and time-consuming. Improper installation (e.g., not cleaning the mating surfaces, overtightening, or using incorrect tools) can void the seal s effectiveness.

4. **Limited Availability of Installation Tools** Some Corteco seals may require specific tools (e.g., seal installers, torque wrenches, or gasket scrapers) that aren t always included. Owners may need to purchase these separately, adding to the cost.

5. **Risk of Oil Leaks if Not Properly Installed** No seal is foolproof, and even high-quality ones can fail if not installed correctly. A poorly seated or damaged seal can lead to oil leaks, which can damage the transmission or require further repairs.

6. **Price Sensitivity** While Corteco is reasonably priced compared to OEM, some owners may find it slightly more expensive than the cheapest generic seals available. However, the trade-off in quality is usually worth it.

7. **Mixed Reviews on Longevity** While many users report long-term success, some owners in extreme conditions (e.g., high-performance builds, aggressive driving, or extreme temperatures) have experienced premature failure. This is more common with cheaper seals but can occasionally happen with Corteco as well.

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The **Corteco W0133-1631444-CFW rear crankshaft seal** is an excellent choice for Porsche 944 owners (1983 1991) seeking a reliable, high-quality replacement that balances performance and cost. It offers the durability and precision of an OEM-like part without the drawbacks of generic or counterfeit alternatives. However, it is not a perfect solution its effectiveness depends heavily on proper installation, and it is not a true OEM part.

- DIYers who prioritize quality and ease of installation.

- Owners who want a balance between cost and reliability.

- Those who have modified their 944 and need a seal that can handle increased stress.

If you are concerned about absolute longevity or have access to an OEM seal, that may be preferable, but Corteco is the best aftermarket option for the vast majority of cases.

**Buy the Corteco W0133-1631444-CFW** from a trusted dealer, ensure proper installation (consider consulting a mechanic if unsure), and follow maintenance guidelines to maximize its lifespan. Avoid purchasing from unverified sellers to prevent counterfeit parts. If budget allows, pair it with high-quality gaskets and lubricants (e.g., RTV silicone or Corteco s own sealant) for added protection.

Details:

Rear Crankshaft Seal W CFW by Corteco. Specifications: Size: 90 x 110 12mm. Made from high-quality materials for ultimate durability. This product is distinguished by total quality assurance, unsurpassed anybody else.

Manufactured to meet or exceed strict quality requirements. Features: designed to deliver trouble-free, consistent performance. Right for your vehicle and lifestyle.

part #: w01331631444 price

• $29.59

specifications cranshafengin:

• for makes: Porsche
• for years: 1983-1991
• brand: Corteco
• mpn: W0133-1631444-cfw
• part type: Seal Crankshaft
• product type: Engine
• california prop 65 warning: Cancer And Reproductive Harm
• fitment type: Direct Replacement
• compatible model s : 944, 928, 924, 911
• fitnote: Enginevinname
• product subtype: Crankshafts
• product details: Engine Crankshaft Seal
• department: Replacement

returns cranshafengin:

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

general cranshafengin:

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

seller cranshafengin:

• rating: 95.7%
• # reviews: 13276
• city: Shawnee, Kansas

payments cranshafengin:

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

shipping cranshafengin:

• transit: 3-6 Days
• cost: $15.00
• type: Fixed
• class: Standard
• carrier: UPS
• service: UPS Ground

offer cranshafengin:

• started: June 5, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home
• quantity: 5

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