CHEVROLET 337-04757 Throttle Body 8-305 5.0L
fits model: Caprice. make: Chevrolet. year: 1991–1993.
( Part Type: Throttle ), ( Conditions Options: Rwd, At ), ( Genuine Oem: Yes ), ( Ipn: 337-04757 ), ( Year: 1992 )
Review CHEVROLET Throttle Body Assembly 5.0l fits CAPRICE 1991–1993
The **Chevrolet 337-04757 Throttle Body** is a precision-engineered component designed exclusively for the **5.0L (305 cubic inch) V8 small-block engine** found in **1991 1993 Chevrolet Caprice** models, including the **Caprice Classic, Impala SS, and Monte Carlo SS**. This throttle body is a direct replacement for the original **EFI (Electronic Fuel Injection) system**, ensuring seamless integration with the **L67 or L98 engine configurations**, which were standard in these high-performance applications. Crafted from durable **aluminum alloy**, the throttle body is built to withstand the demands of high-performance driving while maintaining reliability under heavy throttle loads. Its **8-position throttle blade** allows for precise control over airflow, making it ideal for both stock restorations and modified setups where performance tuning is required. The unit features a **clean, modern design** with integrated **throttle position sensor (TPS) wiring harness**, ensuring compatibility with the vehicle s factory electrical system without the need for additional modifications. Whether you're restoring a classic muscle car to its original glory or upgrading an existing EFI system for better throttle response, this throttle body delivers a perfect balance of performance and authenticity. Its **OEM specifications** guarantee a snug fit with minimal clearance issues, while its **high-quality construction** ensures longevity even under aggressive driving conditions. For enthusiasts seeking a reliable, high-performance solution for their **5.0L Caprice**, this throttle body is an essential component that bridges the gap between stock reliability and aftermarket performance enhancements.
### **Pros and Cons of Buying a Chevrolet 337-04757 Throttle Body (8-305) for a 5.0L (91-93 Caprice)**
#### **Pros:**1. **Direct Fitment** This throttle body is specifically designed for the 5.0L V8 engines found in the 1991-1993 Chevrolet Caprice, ensuring proper installation and functionality without modifications.
2. **Performance Potential** A clean throttle body improves airflow, which can enhance throttle response and overall engine performance, especially if the original unit was dirty or clogged.
3. **Cost-Effective Replacement** Compared to rebuilding or replacing the entire throttle body assembly, this part is relatively inexpensive, making it a practical solution for minor issues.
4. **Easy Installation** The design is straightforward, and many mechanics or DIYers can replace it without specialized tools, reducing labor costs.
5. **Compatibility with Aftermarket Mods** If you plan to modify your engine (e.g., forced induction, performance tuning), a clean throttle body ensures better compatibility with aftermarket components.
6. **Prevents Further Damage** A failing throttle body can cause rough idling, stalling, or even long-term engine damage if carbon buildup or mechanical failure occurs. Replacing it proactively can avoid these issues.
7. **OEM Quality** As an original equipment part (or a high-quality aftermarket equivalent), it maintains the same standards as the factory unit, ensuring reliability.
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#### **Cons:**1. **Age and Wear** Even if the throttle body itself is new, the surrounding components (throttle position sensor, wiring, or intake manifold) may be worn out from years of use, requiring additional repairs.
2. **Potential for Contamination** If the engine bay is dirty or if the new throttle body isn t properly cleaned before installation, debris could enter and clog it again quickly.
3. **Limited Longevity with Poor Maintenance** Throttle bodies can degrade over time if exposed to fuel additives, oil leaks, or carbon buildup from poor fuel quality. Regular cleaning (e.g., with throttle body cleaner) is necessary to maintain performance.
4. **Mismatch with Modified Engines** If your Caprice has been heavily modified (e.g., turbocharged, supercharged, or with a high-flow intake), the stock throttle body may become a bottleneck, requiring an upgraded unit.
5. **Electrical Issues** The throttle body may be paired with a throttle position sensor (TPS) that could fail independently. Replacing just the throttle body won t fix TPS-related problems.
6. **Availability of Genuine Parts** While this part is common, finding a *brand-new* OEM throttle body may be difficult, and aftermarket versions may vary in quality. Always verify the source.
7. **Installation Challenges** If the vehicle has been previously modified or abused, the throttle body housing or intake manifold gaskets may need replacement, adding to the cost.
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### **Ending Conclusion:**The **337-04757 throttle body** is a solid, cost-effective solution for restoring proper throttle response in a **1991-1993 5.0L Caprice**, especially if the original unit was dirty or failing. It s a straightforward upgrade that can improve drivability without requiring major engine work. However, it s not a "fix-all" part success depends on addressing related issues (e.g., intake leaks, TPS problems, or carbon buildup) and maintaining the engine afterward.
If your primary goal is **basic functionality and reliability**, this part is a wise purchase. If you re pursuing **high-performance tuning**, you may need a higher-flow throttle body or supporting modifications (e.g., ECU tuning, intake upgrades).
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### **Recommendation:**1. **Verify Compatibility** Double-check that this part number matches your exact engine application (some Caprice models had slight variations).
2. **Inspect Related Components** Before installing, clean the throttle body housing, check the throttle position sensor, and ensure the intake manifold gaskets are intact.
3. **Use a High-Quality Cleaner** After installation, use a throttle body cleaner (like CRC or Gunk) to remove carbon deposits and prevent future clogging.
4. **Consider a Cleaning Alternative** If the throttle body is just dirty, professional cleaning (e.g., ultrasonic or manual cleaning) may be cheaper than replacement.
5. **Pair with Maintenance** Replace the PCV valve, air filter, and spark plugs if they re old, as these can affect throttle response.
6. **Source Wisely** Buy from a reputable supplier (e.g., RockAuto, Summit Racing, or an auto parts store with return policies) to avoid counterfeit or damaged parts.
**Final Verdict:** **Buy it if your throttle body is confirmed faulty or dirty**, but be prepared for potential follow-up work. If you re unsure about the condition of the rest of the intake system, a thorough inspection is worth the extra effort. For performance builds, research higher-flow alternatives later.
Details:
CUSTOM CRUISER 92 Throttle Body Assembly; 8-305 5.0L. CAPRICE 91-93 Throttle Body Assembly; 8-305 5.0L. CUSTOM CRUISER 91 Throttle Body Assembly;.
part #: 337-04757 prices
- $50.00-$129.99
specifications throobo:
- for models: Caprice
- for makes: Chevrolet
- for years: 1991-1993
- part type: Throttle
- conditions options: Rwd, At
- genuine oem: Yes
- ipn: 337-04757
- year: 1992
payments throobo:
- wallet: Paypal
- credit card: Diners-club
- other
offer throobo:
- started: March 9, 2026
- availability: In Stock
- options: Ship-to-home
- sold: 0
- quantity: 1
returns throobo:
- paid by: Buyer
- policy: Returns Accepted
- time: 30 Days
general throobo:
- Car Truck Parts Accessories > Air Fuel Delivery > Throttle Bodies
- condition: Used
shipping throobo:
- service: USPS Priority Mail Medium Flat Rate Box
- cost: $0.00
- carrier: USPS
- transit: 2-5 Days
- type: Fixed
- class: Expedited
seller throobo:
- # reviews: 4972
- rating: 99.4%
- city: Litchfield, Minnesota
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