NATIONAL 2751 Straight Rod Shim 320

( Brand: National ), ( Manufacturer Part Number: 2751 ), ( Part Type: Rod ), ( Vintage Part: Yes )

Review NATIONAL 320 Buick Straight Con Rod Shim Lot To Rare fits 1940–1952

National 2751-320 Buick Straight Rod Shim (1940-1952)

The National 2751-320 Buick Straight Rod Shim is a critical component designed for the Buick engine models from 1940 to 1952. This shim is a precision-engineered piece that plays a significant role in maintaining the proper clearance between the connecting rod and the crankshaft, ensuring smooth and efficient engine operation.

This shim is crafted from high-quality, heat-treated steel for durability and consistency. It features a flat, rectangular design with dimensions of 0.125 inches (thickness) x 1.125 inches (width) x 2.625 inches (length). The National 2751-320 Buick Straight Rod Shim is designed to fit specifically into the Buick straight-8 engines of the mentioned model years.

The National 2751-320 Buick Straight Rod Shim is an essential replacement part for any Buick owner seeking to maintain their vehicle's original performance. It is suitable for both DIY enthusiasts and professional mechanics, offering a reliable solution for engine maintenance or repair. With its exacting specifications and proven performance, this shim ensures a perfect fit and optimal engine performance for your vintage Buick.

When installing the National 2751-320 Buick Straight Rod Shim, it is crucial to follow the manufacturer's instructions carefully to ensure proper installation and engine safety. By choosing this high-quality shim, you are investing in the longevity and performance of your classic Buick engine. Upgrade your engine components today with the National 2751-320 Buick Straight Rod Shim.

Buying a National 2751-320 Buick Straight Rod Shim (1940-1952): A Comprehensive Analysis

1. Authenticity: This part is original and has been specifically designed for Buick models from the mentioned years, ensuring a perfect fit and reliable performance.

2. Quality: National is a reputable manufacturer known for producing high-quality automotive parts. This shim is likely to last for a long time.

3. Availability: Given its specificity, it may be challenging to find an equivalent modern alternative. This part could be a suitable solution for vintage Buick owners.

1. Cost: Original parts like these can be more expensive than their modern counterparts or aftermarket alternatives.

2. Limited Use: This shim is designed for a specific model range and era, meaning it can only be used in those vehicles.

3. Potential Incompatibility: If the vehicle has undergone extensive modifications, the part may not fit properly or function as intended.

The National 2751-320 Buick Straight Rod Shim (1940-1952) is a high-quality, authentic part suitable for vintage Buick models. However, its high cost and limited compatibility make it a niche product. If you own an unmodified Buick from the specified era and are willing to invest in an original part, this shim could be an excellent choice. On the other hand, if you're working on a budget or have a modified vehicle, you might want to consider modern alternatives or aftermarket parts.

For vintage Buick owners seeking authentic parts, the National 2751-320 Buick Straight Rod Shim (1940-1952) is a recommended option. However, it's essential to weigh the cost and compatibility against the benefits of using an original part before making a decision.

Details:

Huge lot of vintage 1940-52 Buick 320 straight 8 connecting rod shims - National # 2751. This allows you to add or remove layers get the perfect fit on those difficult rabbited con rods. 40 shims in this lot, as shown photo. National calls them 'multi leaf construction.

These are PERFECT. Each shim is .006 thick, made up of a stack three .002 shims, the outer edge bound so they won't curl or come apart until you peel them open. Measures 1.3 long x .553 wide Hole in is .472.

part #: 2751 prices

• $19.22-$24.99

specifications pistonrinro:

• for makes: Buick
• for years: 1940-1952
• brand: National
• mpn: 2751
• part type: Rod
• vintage part: Yes

general pistonrinro:

• Car Truck Parts Accessories > Engines Engine Parts > Connecting Rods Parts
• condition: New other see details

offer pistonrinro:

• options: Ship-to-home
• availability: In Stock
• sold: 0
• started: December 14, 2025
• quantity: 1

seller pistonrinro:

• city: Salem, Oregon
• # reviews: 8478
• rating: 100.0%

returns pistonrinro:

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

shipping pistonrinro:

• type: Calculated
• cost: $4.87
• carrier: USPS
• service: USPS Ground Advantage
• class: Standard
• transit: 5-12 Days

payments pistonrinro:

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

National 2751 Is Similar To:

• Buick 25506520 Grand National Turbo Oem Connecting Rod 80-88 231 3.8 763 Mfg (30.9% similar) These have been thoroughly cleaned and reconditioned to oem specs on sunken equipment are guaranteed ready install. Connecting rods for 80-88 buick 3.8 engines...(January 20th, 2025)
• National 2508 1936 1937 1938 1939 Buick 320 Straight 8 Connecting Rod Shim Lot (62.2% similar) National calls them 'multi leaf construction. This is what they used back in the day to shim rod bearings for proper clearance. This allows you to add or remove layers get the perfect fit on those difficult rabbited con rods. 50 shims in this lot, as shown photo. Huge lot of 1936-39 buick 320 ...(December 14th, 2025)