HARLEY-DAVIDSON 17904-86 Intake Exhaust Push Rods Set

( Brand: Harley-davidson ), ( Manufacturer Part Number: 17904-86 ), ( Type: Engine Valves Bike )

Review HARLEY DAVIDSON Intake Exhaust Push Rods Set fits SPORTSTER XLH883 883 1989

The **Harley-Davidson 17904-86 1989 Sportster 883 XLH883 Intake/Exhaust Push Rod Set** is a meticulously engineered aftermarket performance upgrade designed exclusively for the iconic **1989 Harley-Davidson Sportster 883 XLH883**, offering a blend of enhanced airflow, improved throttle response, and a refined exhaust note. This high-quality push rod set is crafted to replace the stock components, ensuring a seamless fit while delivering measurable gains in power and efficiency. The intake push rods are precision-machined from durable materials, featuring optimized contours to minimize turbulence and maximize airflow into the cylinder, which translates to better combustion and smoother acceleration. Complementing the intake rods, the exhaust push rods are designed to work in tandem with the intake, allowing for a more harmonious exhaust pulse that not only enhances performance but also contributes to a deeper, more engaging exhaust tone ideal for riders who appreciate both power and sound. This set is particularly well-suited for those looking to restore or modify their 1989 XLH883, as it adheres to the original engine s specifications while pushing it beyond its stock limitations. Whether you're aiming for a subtle refinement or a more aggressive performance boost, this push rod set provides a reliable and effective solution, ensuring your Sportster not only runs better but also sounds like the legendary machine it is. Built to Harley-Davidson standards, it combines durability with performance, making it a must-have for enthusiasts seeking to unlock the full potential of their classic 883.

### **Pros and Cons of buying a Harley-Davidson 17904-86 (1989 Sportster 883 XLH883 Intake/Exhaust/Push Rods Set)**

1. **Performance Improvement** This set includes upgraded intake and exhaust components, which can enhance airflow, throttle response, and overall engine efficiency. The push rods are often reinforced or upgraded for better durability and smoother operation, potentially increasing horsepower and torque.

2. **Restoration & Customization** If your 1989 Sportster is a project bike or you re looking to restore it to factory specs, this OEM or aftermarket-compatible set ensures authenticity and proper fitment. It s a cost-effective way to refresh key engine components without a full rebuild.

3. **Compatibility** The 1989 XLH883 (Sportster 883) is a well-documented model, and this set is designed specifically for it. Most parts are interchangeable with other Sportster models from the era, making swaps or upgrades easier if needed.

4. **Durability & Longevity** Harley-Davidson parts, even older ones, are built to last. The push rods, in particular, are critical for engine reliability, and upgrading them can prevent catastrophic failure (e.g., rod knock) over time.

5. **Resale Value** If you plan to sell the bike later, having original or high-quality aftermarket parts installed can make it more appealing to buyers who value authenticity or performance.

6. **Easier Maintenance** Upgraded intake and exhaust systems can reduce carbon buildup and improve combustion, leading to cleaner engine operation and fewer long-term issues.

7. **Sound & Feel** A well-tuned exhaust system can improve the bike s exhaust note, making it sound more aggressive or sporty, which is appealing to enthusiasts.

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1. **Age & Wear** The 1989 Sportster is over 30 years old, and while this part set is functional, the bike itself may have other worn components (e.g., clutch, transmission, suspension) that need attention. Buying just this set without addressing the rest of the bike could lead to frustration.

2. **Fitment Challenges** If the bike has been heavily modified or has aftermarket components (e.g., different camshafts, headers), these parts may not fit perfectly. You ll need to verify compatibility before purchasing.

3. **Cost vs. Benefit** While this set is relatively affordable for a Harley-Davidson part, labor costs for installation (especially if you re not mechanically inclined) can add up. If the bike needs other major repairs (e.g., engine rebuild, frame work), this set may not be the highest priority.

4. **Aftermarket vs. OEM Quality** If you buy a non-Harley aftermarket set, there s a risk of lower-quality materials or poor craftsmanship. OEM parts are reliable but may not offer the same performance gains as high-end aftermarket upgrades.

5. **Learning Curve** Installing intake, exhaust, and push rods requires mechanical skill. Mistakes (e.g., improper gasket sealing, incorrect torque specs) can lead to leaks, poor performance, or even engine damage.

6. **Depreciation** Harley-Davidson parts, even OEM, depreciate over time. If you re not planning to keep the bike long-term, the value of this set diminishes once installed.

7. **Environmental & Emissions Concerns** Older Harley engines were not designed with modern emissions standards in mind. Upgrading the exhaust could make the bike less compliant with local regulations, especially if you ride in areas with strict emissions laws.

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### **Conclusion**

- You re restoring or maintaining a classic Sportster and want to upgrade critical engine components.

- You re mechanically capable (or willing to pay for professional installation).

- The bike is otherwise in good condition, or you plan to address other wear items simultaneously.

- You prioritize performance, sound, and longevity over purely aesthetic or modern compliance.

- The bike has major underlying issues (e.g., engine damage, frame rust) that need addressing first.

- You lack mechanical experience and aren t prepared for the installation challenge.

- You re buying it purely for resale value without intending to ride or restore the bike.

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### **Recommendation**

1. **Verify Bike Condition First** Before purchasing this set, ensure the rest of the engine (crankshaft, pistons, bearings) is in good shape. A push rod upgrade alone won t fix a failing engine.

2. **Choose Quality Over Cheapness** If going aftermarket, opt for reputable brands (e.g., **Harley-Davidson Performance Parts, Dyna Drive, or reputable custom shops**) rather than unknown manufacturers to avoid poor-quality components.

3. **Budget for Labor** If you re not comfortable installing these parts yourself, factor in labor costs (typically $150 $300 per hour for Harley specialists).

4. **Consider a Full Engine Refresh** If the bike is a project, weigh whether this set is part of a larger plan (e.g., full engine rebuild, suspension upgrade, fuel system tune). Isolated upgrades may not be worth it without addressing the whole bike.

5. **Test Ride & Listen** After installation, take the bike for a test ride to ensure the exhaust sounds right and the engine runs smoothly. Unusual noises (e.g., rattling push rods, exhaust leaks) should be addressed immediately.

6. **Check for Alternatives** If your goal is performance, explore **aftermarket intake manifolds (e.g., Dyna Drive), headers, or camshaft upgrades** that may offer better gains than a basic OEM-style set.

This part set is a **good mid-tier upgrade** for a 1989 XLH883 owner who wants to improve engine performance and reliability without a full rebuild. However, it s not a "quick fix" for a neglected bike. If you re serious about the project, prioritize it alongside other necessary repairs, and ensure you have the skills (or access to a mechanic) to install it correctly. For casual riders or those unsure about mechanical work, it may be better to hold off until the bike is in better shape.

Details:

part #: 1790486 prices

• $11.99-$49.95

specifications valvemotorcycleaz:

• for models: Xlh883, 883, Sportster
• for makes: Harley
• for years: 1989
• brand: Harley-davidson
• mpn: 17904-86
• type: Engine Valves Bike

returns valvemotorcycleaz:

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

general valvemotorcycleaz:

• Engines Engine Parts > Valvetrain Components > Engine Valves
• condition: Used

shipping valvemotorcycleaz:

• class: Standard
• service: USPS Ground Advantage
• transit: 3-9 Days
• cost: $7.99
• carrier: USPS
• type: Fixed

payments valvemotorcycleaz:

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

seller valvemotorcycleaz:

• rating: 99.7%
• city: Lake Havasu City, Arizona
• # reviews: 35543

offer valvemotorcycleaz:

• started: February 10, 2026
• options: Ship-to-home
• availability: In Stock
• sold: 0
• quantity: 1

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