EASTERN MOTORCYCLE PARTS 41671-37 Cam Idler Pinion Gear M/c Bushing 1957-UP

( Brand: Eastern Motorcycle Parts ), ( Manufacturer Part Number: 41671-37 ), ( Type: Brake Cam Bushing Kit ), ( Machine Type: Street Motorcycle ), ( Manufacturer Warranty: 30 Day ), ( Material: Steel ), ( Country Of Origin: United States ), ( Modified Item: No ), ( Placement On Vehicle: Rear )

Review EASTERN MOTORCYCLE PARTS M/c Cam Idler Pinion Gear Bushing Lot 1957-up Harley fits SPORTSTER

The **Eastern 41671-37 M/C Cam Idler Pinion Gear Bushing** is a meticulously engineered, high-performance replacement component specifically designed for Harley-Davidson Sportster models from 1957 and beyond, ensuring seamless operation of the camshaft drive system. This precision-machined bushing is crafted from durable, heat-resistant materials, including high-grade steel or reinforced polymer, to withstand the rigorous demands of continuous engine operation while minimizing wear and friction. Positioned between the camshaft idler pinion gear and its mounting surface, this bushing acts as a critical load-bearing interface, absorbing vibrations and reducing stress on the gear assembly, thereby extending the lifespan of both the pinion and its supporting components. Its tight tolerances and smooth, polished surface ensure optimal alignment and quiet operation, preventing premature failure of the camshaft drive mechanism a common source of noise and inefficiency in aging Sportsters. Whether installed in a classic restoration project or a modernized high-mileage engine, this bushing delivers reliable performance, reducing the risk of catastrophic gear failure and maintaining the engine s smooth, responsive character. Ideal for mechanics and enthusiasts seeking OEM-level quality, the Eastern part is a direct-fit replacement, compatible with the original Harley-Davidson specifications, and backed by the brand s reputation for precision engineering and durability.

**Pros and Cons of buying a Eastern 41671-37 M/C Cam Idler Pinion Gear Bushing for a 1957-Up Harley-Davidson Sportster**

1. **Compatibility and Fit:** This part is specifically designed for the 1957 and later Harley-Davidson Sportster models, ensuring a proper fit without modifications. The cam idler pinion gear bushing is a critical component that supports the camshaft and helps maintain proper timing, so having an OEM or high-quality aftermarket part ensures reliability.

2. **Durability:** The Eastern brand is known for producing durable, high-quality motorcycle parts. The bushing is likely made from materials that can withstand the stress and heat generated during operation, reducing the risk of premature wear or failure.

3. **Performance:** A well-functioning cam idler pinion gear bushing ensures smooth operation of the camshaft, which is essential for proper valve timing and engine performance. Replacing a worn or damaged bushing can restore smooth operation and prevent issues like rough idling, misfiring, or poor acceleration.

4. **Preventative Maintenance:** Replacing this part as part of routine maintenance can prevent more costly damage down the line. The camshaft and its supporting components are critical to engine health, and addressing wear early can save time and money on major repairs.

5. **Ease of Installation:** Since this is a relatively straightforward part to replace, it can be installed by someone with basic mechanical skills. The process typically involves removing the cam cover, accessing the bushing, and replacing it with the new one, often without the need for specialized tools.

6. **Availability:** As an older but still widely used part, this bushing is relatively easy to find, especially from reputable suppliers like Eastern. This ensures you won t face long wait times or difficulty sourcing the part.

---

1. **Cost:** While not excessively expensive, the cost of the bushing may still be a consideration, especially if you re on a tight budget. Prices can vary depending on the supplier, but it s generally a mid-range part in terms of cost.

2. **Potential for Counterfeit Parts:** Since this is an older part, there is a risk of encountering counterfeit or low-quality aftermarket parts, particularly if purchasing from untrusted sources. Counterfeit parts may fail prematurely or not fit correctly, leading to further issues.

3. **Labor Time:** If you re not comfortable performing the replacement yourself, you ll need to factor in the labor cost at a shop. While the job isn t overly complex, it does require some mechanical knowledge and patience, which some riders may not have.

4. **Additional Wear:** If the camshaft or other related components (such as the cam idler pinion gear itself) are worn or damaged, replacing just the bushing may not fully resolve the issue. You might need to address other parts simultaneously for a complete fix.

5. **Limited Longevity:** Even high-quality bushings have a finite lifespan, especially in high-mileage or heavily used engines. While the Eastern bushing is durable, it may still require replacement in the future depending on usage and maintenance habits.

6. **Potential for Misdiagnosis:** If the symptoms you re experiencing (e.g., rough idle, ticking noises) are caused by something other than the bushing (such as worn cam lobes, valve train issues, or oil sludge), replacing the bushing alone may not solve the problem. A thorough diagnosis is essential before purchasing.

---

The Eastern 41671-37 cam idler pinion gear bushing is a solid, reliable part for your 1957-up Harley-Davidson Sportster, offering a good balance of quality, compatibility, and performance. It is a practical choice for maintaining or restoring the smooth operation of your engine, especially if you re experiencing symptoms related to camshaft or valve train wear. However, it s important to ensure you re purchasing from a trusted supplier to avoid counterfeit parts and to confirm that the bushing is indeed the root cause of your issues.

If you re comfortable with basic mechanical work, replacing the bushing yourself can save labor costs. If not, factor in the cost of professional installation. Additionally, consider whether other related components (like the camshaft or idler pinion gear) may need attention to ensure long-term reliability.

If you ve diagnosed the issue as a worn cam idler pinion gear bushing and are confident in the part s quality (preferably from a reputable dealer like Eastern or a trusted aftermarket supplier), proceed with the purchase. Replace the bushing as part of a broader maintenance check to address any other potential wear in the camshaft area. If you re unsure about the symptoms or the condition of other components, consult a mechanic for a professional diagnosis before buying. For most riders, this part is a worthwhile investment in the longevity and performance of their Sportster.

Details:

Parts for Harley Davidson, Ducat and more. I do combine shipping. Keep checking back.

part #: 4167137 prices

• $11.73-$12.99

specifications cyclebrakeshoe:

• for models: Sportster
• for makes: Harley
• brand: Eastern Motorcycle Parts
• mpn: 41671-37
• type: Brake Cam Bushing Kit
• machine type: Street Motorcycle
• manufacturer warranty: 30 Day
• material: Steel
• country of origin: United States
• modified item: No
• placement on vehicle: Rear

shipping cyclebrakeshoe:

• type: Fixed
• class: Standard
• transit: 4-10 Days
• cost: $8.00
• carrier: USPS
• service: USPS Ground Advantage

seller cyclebrakeshoe:

• # reviews: 16042
• city: Dickson, Tennessee
• rating: 99.5%

payments cyclebrakeshoe:

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

offer cyclebrakeshoe:

• started: April 13, 2026
• options: Ship-to-home
• best offers: True
• quantity: 1
• availability: In Stock
• sold: 0

returns cyclebrakeshoe:

• policy: No Returns

general cyclebrakeshoe:

• condition: New
• Motorcycle Scooter Parts Accessories > Brakes Brake Parts > Brake Shoes

Eastern Motorcycle Parts 41671-37 Is Similar To:

• 32-0339 Eastern Motorcycle Parts Lower Shock Studs (46.6% similar) Photos are for reference only. Studs are sold separately. Unlock nuts are cadmium-plated and cup washers chrome-plated. Actual product may differ from the item shown in photograph. On the continent of north America. Zinc-plated studs are available in upper and lower styles. Made in the USA...(February 8th, 2019)
• 32-0348 Eastern Motorcycle Parts Mc Upper Shock Stud For Harley Shovelhead (51.8% similar) Eastern MC upper shock stud for harley shovel head image to. Merchandise must be in new condition with all packaging, manuals, tags, and paperwork intact unaltered. You can reach through messages, messages are checked frequently. Fits: harley shovel head zinc plated stud are sold each made in the us...(April 13th, 2018)
• 32-0368 Eastern Motorcycle Lower Shock (35.8% similar) ...(February 5th, 2018)
• 32-0372 Eastern Motorcycle Parts Lower Shock Studs (46.6% similar) Zinc-plated studs are available in upper and lower styles. Studs are sold separately. Actual product may differ from the item shown in photograph. Unlock nuts are cadmium-plated and cup washers chrome-plated. On the continent of north America. Made in the USA. Photos are for reference only...(February 8th, 2019)
• 44-0510 Eastern Motorcycle Rear Shock Bushings Harley Davidson (48.1% similar) ...(October 31st, 2018)
• Eastern Motorcycle Parts 17-385 M c Brake Shoes For Harley-davidson Ft49-ft71 Big Twin Ft54-ft78 Xl (48.2% similar) Manufactured by Eastern Motorcycle Parts, these smooth brake shoes offer a 90-DAY manufacturer warranty and free shipping within the lower 48 states. These organic base brake shoes come in a set with front and rear mounting position, ensuring optimal braking performance. Eastern m/c Parts brake ...(November 2nd, 2025)