
( Brand: Thompson Products ), ( Manufacturer Part Number: PB775 ), ( Type: Piston Pin / Wrist Pin Bushing ), ( Country Of Origin: United States )
The **Thompson PB775 NOS (New Old Stock) 8-PB775 Piston Pin Bushings Set (Part Numbers 846-906 OD)** is a meticulously crafted, high-performance replacement component designed specifically for the iconic **Thompson PB775 outboard engine**, a legendary model celebrated for its reliability and durability in marine applications. This set of eight precision-machined piston pin bushings is engineered to restore optimal function to the engine s piston assembly, ensuring smooth operation, reduced friction, and extended component lifespan. Each bushing in this set is manufactured from high-grade, oil-impregnated bronze, a material renowned for its exceptional wear resistance, corrosion protection, and ability to maintain stability under high-stress conditions critical attributes for engines subjected to the demanding forces of saltwater, vibration, and thermal cycling. The bushings are designed with an **846-906 OD (outer diameter)**, perfectly matching the original specifications of the PB775, guaranteeing a snug, interference-free fit within the piston pin bores without compromising clearance or causing binding. Whether restoring a vintage PB775 to factory-like performance or upgrading an existing engine for improved efficiency, this NOS set provides a direct, authentic replacement that adheres to the original engineering standards of the era. Ideal for collectors, restorers, and enthusiasts seeking unaltered, high-quality parts, these bushings are a testament to Thompson s legacy of craftsmanship, offering a seamless blend of heritage and modern reliability for those who demand nothing less than perfection in their marine power systems.
### **Pros and Cons of Buying Thompson PB775 NOS (8-PB775 Piston Pin Bushings Set 846-906 OD)**
#### **Pros:**1. **New Old Stock (NOS) Quality** Since these are NOS parts, they are likely in excellent condition, having been stored properly since production. This ensures minimal wear and reliable performance compared to used or aftermarket parts.
2. **Original Equipment Manufacturer (OEM) Specifications** The parts are designed to match the original specifications of the Thompson PB775 engine, ensuring proper fit, function, and compatibility with other components.
3. **Durability and Longevity** Thompson is a well-regarded brand in outboard motors, known for producing durable parts. These piston pin bushings are designed to withstand the stresses of high-performance operation, reducing the risk of premature failure.
4. **Ease of Installation** Since these are genuine parts, they should align perfectly with the engine s existing setup, reducing the need for modifications or adjustments during installation.
5. **Reliability in Performance** Using OEM bushings helps maintain the engine s intended performance characteristics, such as smooth operation, reduced friction, and consistent power output.
6. **Warranty and Support** NOS parts often come with the original manufacturer s warranty or support, providing peace of mind in case of defects or issues.
7. **Compatibility with Classic Engines** If you own a vintage or restored Thompson PB775, these parts will help preserve the engine s authenticity and performance without compromising on quality.
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#### **Cons:**1. **Cost** NOS parts are typically more expensive than new aftermarket alternatives or used parts. The price reflects their condition, brand reputation, and the fact that they are still in their original packaging.
2. **Limited Availability** Finding NOS parts can be challenging, especially if the original manufacturer no longer produces them. You may need to search through specialty dealers, auctions, or collectors, which could take time.
3. **Potential for Overpaying** Some sellers may inflate prices for NOS parts due to perceived rarity or demand. It s important to research fair market value to avoid paying more than necessary.
4. **Storage and Handling Risks** Even though NOS parts are new, improper storage (e.g., exposure to moisture, dust, or extreme temperatures) could have degraded them over time. Always inspect the parts for signs of wear or damage before purchasing.
5. **No Upgrades or Modern Improvements** Unlike aftermarket parts, NOS components do not include modern advancements such as enhanced materials, coatings, or performance optimizations that could improve efficiency or longevity.
6. **Long Lead Times** Depending on the seller, NOS parts may not be in stock, leading to delays in receiving your order.
7. **Potential for Counterfeit or Mislabeled Parts** There is a risk of receiving fake or incorrectly labeled NOS parts, especially when purchasing from unverified sources. Always buy from reputable dealers with a track record.
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### **Conclusion:**Buying Thompson PB775 NOS piston pin bushings (846-906 OD) is an excellent choice if you prioritize **authenticity, reliability, and long-term performance** for your engine. The parts are built to exact specifications, ensuring a seamless fit and maintaining the original performance of your Thompson PB775. However, the higher cost, potential availability issues, and need for careful sourcing may be drawbacks for some buyers.
If you are restoring or maintaining a classic engine and want to avoid compromising on quality, the NOS option is justified. On the other hand, if budget or convenience is a concern, you may consider **high-quality aftermarket alternatives** that offer similar performance at a lower cost, provided they meet or exceed OEM standards.
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### **Recommendation:** - **Proceed with purchase if:**- You are restoring or maintaining a vintage Thompson PB775 and want OEM-quality parts.
- You are willing to pay a premium for reliability and authenticity.
- You can source the parts from a trusted dealer with a good reputation for NOS inventory.
- **Consider alternatives if:**- You are on a tight budget and can find aftermarket bushings that meet or exceed OEM specifications.
- You are not concerned about authenticity and are open to newer, potentially improved materials.
- You are unable to locate the NOS parts quickly and are willing to wait for them.
**Final Tip:** Always inspect the parts upon arrival, check for any signs of damage or wear, and compare the price with market averages to ensure you are getting a fair deal. If possible, consult with a Thompson engine specialist or a trusted mechanic before making the purchase.
Product Specifications Hand-Verified: length : 1.2860. This is a rare opportunity to own complete, matching set of 8 vintage bronze wrist pin bushings from the legendary Thompson Products. After they are pressed into the rods. Outer Diameter OD: 0.906.
These are original American-made components, preferred by restorers for their superior period-correct metallurgy and durability compared to modern reproductions. Complete Set of 8 New Old Stock NOS Thompson Products Piston Pin Bushings. These are solid bronze bushings no pre-drilled holes.