Crank Mandrel Spacers

Crank pulley alignment is critical for forced induction systems, and even minor runout can cause belt slip, reduce boost delivery, and compromise reliability. The Jones Racing dual dowel spacer eliminates the guesswork with precision CNC-machined...

Precision crankshaft assembly requires exact spacing between components, and the Peterson Fluid Mandrel Spacer ensures your crank rotates true without run-out issues that compromise engine balance and longevity. This aluminum spacer maintains the...

Proper crankshaft spacing is critical for maintaining bearing preload, reducing endplay, and ensuring consistent power delivery across engine load cycles. The Peterson Fluid Mandrel Spacer provides precise positioning on your crank mandrel, eliminating...

Proper crank mandrel spacing is critical for maintaining bearing preload and crankshaft alignment in high-performance engines. This Peterson Fluid mandrel spacer ensures your rotating assembly maintains exact tolerances under load, preventing premature...

Proper crank mandrel spacing is critical for maintaining crankshaft integrity and preventing premature bearing wear in high-performance applications. This Peterson Fluid mandrel spacer ensures precise clearance tolerances, protecting your rotating...

Precise crankshaft alignment is critical for maintaining bearing concentricity and reducing parasitic friction in high-rpm applications. This Peterson mandrel spacer ensures your crank sits perfectly centered during assembly, preventing premature wear...

Precise crankshaft alignment is critical to eliminating bearing wear and reducing parasitic drag—this Peterson mandrel spacer gives you repeatable, exact positioning during assembly and engine blueprinting. Whether you're building a race engine or...

The KRC SBC 3-Bolt Crank Adapter Spacer is essential for precision pulley alignment in your small-block Chevy engine, especially when running serpentine belt systems or upgrading your accessory drive. This 0.500-inch spacer ensures proper crank mandrel...

Precise crankshaft pulley alignment is critical for maintaining belt tension and preventing premature wear on your serpentine system. This KRC R-Lok spacer delivers exact positioning in high-performance and forced-induction applications where factory...

If you're running a KRC R-Lok pulley drive system on your Chevy V8, proper crank mandrel spacing is critical for maintaining belt alignment and preventing premature wear. This .250-inch aluminum spacer ensures precise positioning between R-Lok pulleys,...

Precision crank mandrel alignment is essential for balanced rotating assemblies and consistent performance. This Jones Racing drive spacer maintains exact spacing on your mandrel, ensuring proper damper and pulley positioning without run-out issues. A...

Keep your crank mandrel setup dialed in with the Allstar Performance Mandrel Spacer (ALL31028) — a precision-machined solution built for serious racers who demand reliability and exact fitment. The striking blue anodized finish isn't just for looks; it...

Keep your crank mandrel setup dialed in with the Allstar Performance Mandrel Spacer (ALL31026) — a precision-machined solution built to handle the demands of serious racing applications. This blue anodized aluminum spacer offers a clean, lightweight fit...

Get your engine accessories dialed in with the Allstar Performance Mandrel Spacer — a precision-machined solution that ensures perfect pulley alignment and spacing every time. Built from lightweight aluminum with a striking blue anodized finish, this...

Keep your engine accessories perfectly aligned and positioned with the Allstar Performance Mandrel Spacer. This precision-machined aluminum spacer gives you the exact offset you need for a clean, professional crank mandrel setup. Durable, lightweight,...

Fine-tune your engine's accessory alignment with precision using the Allstar Performance Mandrel Spacer (ALL31020). This lightweight aluminum spacer gives you exact positioning control over your crank mandrel setup, helping eliminate belt misalignment...