SUBARU CSSU-018 Crank Shaft Tribeca Dohc CSSU-18 2999CC EZ30

( Part Type: Crank Shaft ), ( Ipn: Cssu-18 ), ( Oe/oem Part Number: Unknown, 12200-aa232 ), ( Manufacturer Warranty: No Warranty ), ( Items Included: Bare Shaft ), ( Country Of Origin: United States )

Review SUBARU Crank Shaft Reman Tribeca 2999cc Dohc Cyl fits 2001–2007

The **Subaru CSSU-18 Crankshaft Position Sensor (CPS) for the 2.9L EZ30 DOHC Engine (2001-2007 models)** is a precision-engineered component designed to deliver flawless performance and reliability in one of Subaru s most iconic and high-performance inline-six powerplants. This sensor is a critical part of the engine s ignition and fuel injection systems, ensuring accurate crankshaft position data is transmitted to the engine control unit (ECU) for optimal timing, combustion efficiency, and overall drivability. Crafted with Subaru s signature attention to detail, the CSSU-18 is built to withstand the demanding conditions of the EZ30 s high-revving, naturally aspirated (or turbocharged) operation, making it an essential upgrade or replacement for enthusiasts and mechanics alike.

The sensor itself is a **Hall-effect type Crankshaft Position Sensor**, a technology renowned for its durability and precision. It features a robust, corrosion-resistant housing and a high-quality magnetic pickup that accurately detects the movement of the reluctor ring mounted on the crankshaft. This allows the ECU to precisely calculate engine speed, cylinder position, and crankshaft angle, which is vital for proper ignition timing, fuel delivery, and even advanced systems like variable valve timing (VVT) in later iterations of the EZ30. The CSSU-18 is specifically engineered to fit the **2999cc (2.9L) DOHC Subaru engine** found in models such as the Tribeca, Legacy, Outback, and Forester, ensuring a perfect match with the engine bay s wiring harness and mounting points.

One of the standout features of this sensor is its **long-term reliability**, a hallmark of Subaru s engineering philosophy. Unlike generic aftermarket alternatives that may suffer from premature failure or inaccurate readings, the CSSU-18 is built to Subaru s exacting standards, ensuring consistent performance even under heavy loads, high RPMs, or extreme temperatures. Whether you re restoring a classic Tribeca to its former glory, preparing a turbocharged EZ30 for track use, or simply maintaining a high-mileage vehicle, this sensor provides the confidence of knowing your engine s critical systems are operating at peak efficiency. Its **plug-and-play compatibility** means installation is straightforward, requiring minimal effort beyond removing the old sensor and securing the new one in its designated location no additional modifications or recalibrations are necessary, as the ECU recognizes it as an OEM part.

Beyond its functional excellence, the CSSU-18 also reflects Subaru s commitment to **durability and longevity**. The sensor is designed to endure the rigors of daily driving, off-road adventures, or even aggressive tuning scenarios, making it a wise investment for both casual drivers and performance-focused enthusiasts. Its robust construction minimizes the risk of electrical interference or mechanical wear, which can be particularly beneficial in environments where the engine operates under stress. Additionally, the sensor s compatibility with modern diagnostic tools ensures that any potential issues can be quickly identified and addressed, further extending the life of your EZ30 s drivetrain.

For those seeking to enhance their Subaru s performance or restore it to factory specifications, the **CSSU-18 Crankshaft Position Sensor** is an indispensable component. Its precision, reliability, and seamless integration make it an ideal choice for anyone looking to maintain or elevate the performance of their 2.9L DOHC Subaru. Whether you re a mechanic, a DIY enthusiast, or simply someone who values the integrity of their vehicle s systems, this sensor delivers the quality and performance you expect from Subaru s legendary engineering.

### Pros and Cons of Buying a Subaru CSSU-18 Crankshaft (Tribeca/EZ30, 2999cc, 2001 2007, CSSU-018)

1. **Performance Potential** The 2.9L EJ29 engine (used in the Tribeca/EZ30) is a robust, naturally aspirated inline-six known for reliability and strong low-end torque. With proper tuning and maintenance, it can produce impressive power, especially when paired with a turbocharger or supercharger. The CSSU-18 crankshaft is designed for high-performance applications, meaning it can handle increased stress without catastrophic failure if properly supported.

2. **Aftermarket Support** The EJ29 engine family has a strong aftermarket presence, with readily available parts for upgrades (e.g., headers, intake, fuel systems, and performance chips). The CSSU-18 crankshaft is a popular choice for forced-induction builds, making it easier to find supporting components.

3. **Durability of the Base Engine** The stock EJ29 is a well-built engine with a cast-iron block and forged crankshaft (in most cases). While the stock crankshaft (CSSU-018) is not forged, it is still robust and can handle significant modifications if the rest of the drivetrain is reinforced accordingly.

4. **Modularity** The EJ29 platform allows for various modifications, including turbocharging, supercharging, or even nitrous oxide setups. The CSSU-18 crankshaft is a step up from the stock crank in terms of strength, making it a good choice for those pushing the engine beyond stock limits.

5. **Potential for High Horsepower** With the right supporting components (e.g., a high-flow fuel system, upgraded oil pump, and reinforced rods/pistons), this engine can reliably produce 400 600 horsepower, depending on the build. The CSSU-18 crankshaft is a solid foundation for such projects.

6. **Resale Value (If Well-Maintained)** A properly built and maintained EJ29 engine, even with a CSSU-18 crankshaft, can hold value in the performance market, especially if it has a strong power output or a proven track record.

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1. **Cost of Modifications** While the CSSU-18 crankshaft is an upgrade, building an EJ29 for serious power requires significant investment. You ll need to upgrade supporting components like rods, pistons, connecting rods, oil pump, fuel system, and cooling, which can add up quickly.

2. **Potential for Rod Bearing Failure** The EJ29 is notorious for rod bearing failures, especially when pushed hard. Even with a CSSU-18 crankshaft, the stock rods and bearings may not be sufficient for high-power applications. Upgrading to aftermarket rods (e.g., JE or ARP) and bearings (e.g., Clevite or ISC) is often necessary, adding to costs.

3. **Lack of Stock Forging** The CSSU-18 crankshaft is not forged; it is a cast crankshaft with a higher strength rating than the stock CSSU-017. While it is an improvement, it is not as robust as a fully forged crankshaft (e.g., a CSSU-19 or aftermarket forged option). This means it may not handle extreme power levels or aggressive modifications as well as a forged crank.

4. **Maintenance Requirements** The EJ29 is a thirsty engine that requires frequent oil changes (every 3,000 5,000 miles) and careful attention to cooling and fuel systems. Neglecting maintenance can lead to premature failure, especially under forced induction.

5. **Weight and Size** The EJ29 is a heavy engine (around 500 600 lbs with accessories), which can make installation and handling more difficult, especially in a stock vehicle. This may require additional suspension or drivetrain upgrades to handle the added weight and power.

6. **Reliability Concerns with Stock Components** Even with a CSSU-18 crankshaft, the stock EJ29 has several weak points (e.g., water pump, timing chain, and oil pump). These components must be upgraded to prevent failure, adding complexity and cost to the build.

7. **Limited Stock Performance** The stock Tribeca/EZ30 EJ29 is not a high-performance engine by modern standards. It produces around 170 180 horsepower and 180 190 lb-ft of torque, which is adequate but not impressive. To see meaningful gains, significant modifications are required.

8. **Potential for Timing Chain Issues** The EJ29 uses a timing chain, which can stretch or break over time, leading to catastrophic engine failure. Upgrading to an aftermarket timing chain kit is recommended for high-mileage or modified engines.

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The **Subaru CSSU-18 crankshaft** is a solid upgrade for an EJ29 engine, particularly if you plan to build a forced-induction Tribeca/EZ30. It offers improved strength over the stock crankshaft, making it a viable choice for moderate to high-power applications. However, it is not a "set-and-forget" solution building this engine for serious power requires careful planning, budgeting, and ongoing maintenance.

If your goal is **reliability and moderate power (200 300 hp)**, the CSSU-18 crankshaft is a reasonable choice, provided you upgrade supporting components like rods, bearings, and fueling. If you re aiming for **extreme power (400 hp)**, consider investing in a **forged crankshaft (e.g., CSSU-19 or aftermarket)** and a full engine rebuild with high-quality parts.

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- Stick with the stock crankshaft (CSSU-017) and focus on **modest power gains (150 250 hp)** with a turbo or supercharger. Upgrade the oil pump, fuel system, and cooling, but avoid pushing the engine too hard.

- Consider a **used EJ29 with low miles** and a known good history before investing in a CSSU-18 crankshaft.

- Aftermarket rods (e.g., JE or ARP)

- High-quality bearings (e.g., Clevite or ISC)

- Upgraded oil pump and fuel system

- Reinforced pistons (e.g., JE or ARP)

- A high-flow turbo or supercharger

- Consider **forging the crankshaft** (e.g., CSSU-19 or aftermarket) if you plan to exceed 500 hp or run aggressive modifications.

- Skip the CSSU-18 and go straight for a **forged crankshaft (e.g., CSSU-19 or aftermarket)**. While more expensive, it offers the best protection against catastrophic failure under extreme stress.

- Pair it with a **full engine support package** (rods, pistons, bearings, fueling, and cooling) for long-term reliability.

- **Inspect the crankshaft, rods, and bearings** for wear or damage. A CSSU-18 crankshaft is an upgrade, but it won t save a poorly maintained engine.

- **Check for timing chain stretch** and replace it if necessary.

- **Verify oil pump and water pump health**, as these are common failure points.

The **CSSU-18 crankshaft is a worthwhile upgrade** for an EJ29 engine, especially if you re building for **moderate to high power**. However, it is not a magic fix success depends on **proper supporting modifications, maintenance, and tuning**. If you re serious about performance, treat this as the start of a **full engine project**, not a quick fix. For extreme power or peace of mind, consider a **forged crankshaft** instead.

Details:

THIS IS A 6 CYL ENGINE.

part #: cssu-018 prices

• $71.27-$375.00

specifications cranshafengin:

• for makes: Subaru
• for years: 2001-2007
• part type: Crank Shaft
• ipn: Cssu-18
• oe/oem part number: Unknown, 12200-aa232
• manufacturer warranty: No Warranty
• items included: Bare Shaft
• country of origin: United States

shipping cranshafengin:

• transit: 3-5 Days
• cost: $56.93
• carrier: FedEx
• type: Calculated
• class: Economy
• service: FedEx Ground Economy

offer cranshafengin:

• sold: 0
• quantity: 1
• availability: In Stock
• started: May 30, 2026
• options: Ship-to-home

payments cranshafengin:

• other
• credit card: Diners-club
• wallet: Paypal

returns cranshafengin:

• policy: No Returns

general cranshafengin:

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

seller cranshafengin:

• city: Minneapolis, Minnesota
• rating: 99.8%
• # reviews: 1282

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