SATURN 21007717 Harmonic Balancer Crankshaft Pulley Bolt SC2 1.9L Dohc

( Manufacturer Part Number: 21007717 ), ( Part Type: Balancer Crankshaft Bolt ), ( Id: 2ac248e9-4602-443e-8aa3-4d3f1b0c7896 ), ( Interchange: 309-563 ), ( Year: 1993 )

Review SATURN Sc2 Coupe Harmonic Balancer Crankshaft Pulley Bolt Oem 1.9l Dohc fits 1991–2002

The **Saturn 21007717 91-02 SC2 Harmonic Balancer Crankshaft Pulley Bolt** is a precision-engineered fasteners designed specifically for the 1.9L Dual Overhead Camshaft (DOHC) engine found in Saturn s SC2 platform vehicles, including models like the Ion and Vue from the 2003 to 2005 production years. This high-quality bolt serves as a critical component in securing the harmonic balancer to the crankshaft pulley assembly, ensuring smooth and reliable operation of the engine s accessory drive system. Crafted from a durable, heat-treated alloy steel, this bolt is engineered to withstand the high rotational forces and vibrational stresses inherent in high-performance and daily-driven applications. Its **1/4-inch diameter** and **1.25-inch length** provide the optimal fit for the SC2 engine s crankshaft pulley interface, while its **fine-threaded design** ensures a tight, vibration-resistant seal that prevents loosening over time. The bolt features a **hex head** for easy installation and removal with standard tools, though its robust construction and precision machining make it resistant to stripping, even under torque loads. This part is an exact OEM replacement, maintaining the same specifications as the original equipment manufacturer s component, including the correct thread pitch and bolt pattern, to guarantee a perfect fit and seamless integration with the engine s harmonic balancer assembly. Whether used for routine maintenance, engine rebuilds, or performance upgrades, this bolt delivers the strength and reliability needed to keep the crankshaft pulley securely in place, minimizing wear on the balancer and associated components while extending the overall lifespan of the engine s accessory drive system.

### Pros and Cons of buying a Saturn 21007717 Harmonic Balancer/Crankshaft Pulley Bolt (1.9L DOHC, 91-02)

1. **Direct Fitment** This part is specifically designed for the 1.9L DOHC Saturn engines from model years 1991 to 2002, ensuring compatibility without modification.

2. **Reliability** A high-quality harmonic balancer and crankshaft pulley bolt assembly helps prevent engine vibration, reduces wear on related components, and minimizes the risk of catastrophic failure (such as a broken crankshaft pulley).

3. **Prevents Costly Damage** A failing harmonic balancer can damage the timing belt, water pump, or even the engine block if it shatters. Replacing it proactively avoids expensive repairs.

4. **OEM Quality (or Near-OEM)** If sourced from a reputable aftermarket brand (such as Gates, Dayco, or AC Delco), this part should meet or exceed factory specifications in durability and performance.

5. **Easy Installation** The bolt is straightforward to replace, requiring basic tools (socket wrench, torque wrench, and possibly a timing belt removal if the pulley is seized).

6. **Long-Term Savings** A well-maintained harmonic balancer extends the life of the engine, reducing long-term maintenance costs.

1. **Cost** While not excessively expensive, the part (especially if OEM or high-quality aftermarket) may cost between $50 and $150, depending on brand and availability. Labor costs for installation (if not DIY) will add to the total expense.

2. **Potential Counterfeit Parts** Some aftermarket parts may be low-quality or counterfeit, leading to premature failure. Purchasing from a trusted supplier (e.g., RockAuto, Amazon, or a local auto parts store with good reviews) mitigates this risk.

3. **Timing Belt Replacement May Be Required** If the harmonic balancer is seized or the timing belt is worn, replacing both simultaneously is often recommended to avoid future issues.

4. **Torque Specifications Must Be Followed** Over-tightening or under-tightening the bolt can cause damage. Using a torque wrench and adhering to the manufacturer s specifications is critical.

5. **DIY Difficulty for Beginners** While not extremely complex, removing and installing the crankshaft pulley may require some mechanical experience, especially if the timing belt or water pump must be removed first.

6. **Limited Availability of OEM Parts** Original equipment manufacturer (OEM) parts for older Saturn models can be harder to find, which may necessitate purchasing aftermarket alternatives.

---

Replacing the harmonic balancer/crankshaft pulley bolt on a 1.9L DOHC Saturn engine is a **necessary preventive maintenance task** rather than a luxury. The risks of neglecting this part such as engine damage from a failed pulley far outweigh the costs and effort involved in replacement. If the part is purchased from a reliable source and installed correctly, it will significantly improve engine longevity and reliability.

For most owners, this is a **worthwhile investment** in engine health, especially if the vehicle is used frequently or has high mileage. However, those uncomfortable with DIY repairs may prefer professional installation to ensure proper torque and alignment.

- **Purchase:** Opt for a high-quality aftermarket brand (e.g., Gates, Dayco, or AC Delco) if OEM is unavailable. Avoid no-name or suspiciously cheap parts.

- **Installation:** If comfortable with basic engine work, proceed with DIY installation. If not, have a trusted mechanic perform the job to avoid mistakes.

- **Additional Maintenance:** Take the opportunity to inspect the timing belt, water pump, and serpentine belt while the pulley is removed. Replace any worn components to prevent future failures.

- **Prevention:** Set a reminder to check the harmonic balancer every 60,000 100,000 miles, as wear can occur gradually without obvious symptoms.

Ultimately, this is a **low-risk, high-reward** maintenance task that pays dividends in engine reliability.

Details:

part #: 21007717 prices

• $45.00-$150.00

specifications cranshafengin:

• for makes: Saturn
• for years: 1991-2002
• mpn: 21007717
• part type: Balancer Crankshaft Bolt
• id: 2ac248e9-4602-443e-8aa3-4d3f1b0c7896
• interchange: 309-563
• year: 1993

returns cranshafengin:

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

shipping cranshafengin:

• class: Standard
• cost: $0.00
• type: Fixed
• transit: 5-8 Days
• service: Standard

offer cranshafengin:

• best offers: True
• availability: In Stock
• started: April 24, 2026
• quantity: 1
• options: Ship-to-home
• sold: 0

payments cranshafengin:

• other
• wallet: Google-pay
• credit card: Discover

seller cranshafengin:

• city: Brush, Colorado
• # reviews: 16076
• rating: 99.5%

general cranshafengin:

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

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