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Total Seal Piston Ring Compressor, 3.947

Total Seal Piston Ring Compressor, 3.947

$70.11
MSRP: $73.62
You Save: $3.51 (5 %)
Part Number: 187470
Brand: Total Seal
Manufacturer Part No: RC3947
Mfg Warranty:  
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Product Details & Specifications
Fits Bore Size 3.947

Total Seal Piston Ring Compressors Professional-Grade Engine Assembly Tools

Total Seal Piston Ring Compressors are precision-machined tools built specifically for engine builders who demand consistency and care during assembly. Made in the USA from high-quality billet aluminum, each compressor is CNC-machined for a specific bore size, ensuring an exact fit and smooth installation.

Unlike adjustable or tapered-style compressors, Total Seals fixed-size design eliminates guesswork. The true-to-bore diameter allows pistons and rings to slide cleanly into the cylinder without binding, distortion, or damageperfect for tight-tolerance builds where precision matters most.


Key Features:

  • Bore-Specific Design: Each tool is precision-machined to a dedicated bore diameter, ensuring exact alignment and repeatable results.

  • CNC-Machined Billet Aluminum: Delivers strength, stability, and longevity for repeated shop use.

  • Low-Friction Finish: Internal surface treatment minimizes drag during piston insertion, reducing potential for ring snagging or scuffing.

  • Chamfered Entry: Guides the piston and ring package smoothly into the cylinder bore.

  • Made in the USA: Built with the quality and attention to detail that Total Seal is known for in professional engine building circles.


Whether you're assembling high-performance race engines, restorations, or high-mileage rebuilds, Total Seal Piston Ring Compressors offer a reliable, consistent way to seat pistons without damaging your ringsor your reputation.