The SPOOLOGIC V2S Low Pressure CHRA-to-Turbine Housing V-Band Clamp SL-280-002 is a direct-fit V-band clamp that joins the CHRA (center housing rotating assembly) to the turbine housing on the V2S compound turbocharger low-pressure stage used on the 2008-2010 Ford 6.4L Powerstroke. Formed from stainless steel with a stainless T-bolt and locking nut so the band holds even tension around the flange after repeated heat cycles. Backed by a 1-Year Limited Warranty.

The turbine-side V-band clamp sees the hottest gas path on the engine — the CHRA-to-turbine housing joint carries full exhaust temperature straight off the turbine wheel. A clamp that loses tension here dumps unfiltered exhaust into the engine bay and drops boost response. This clamp is dimensionally matched to the OE V-band flange — same band diameter, same V-profile angle, same T-bolt thread pitch — so it drops onto the housing with no fitment work.

Why You Replace the V-Band Clamp — Not Just Retorque It

V-band clamps are stretchable, single-use hardware once heat-cycled. Here's what actually happens to a used clamp:

• Band stretch — the stainless band takes a permanent set after the first few dozen heat cycles. A stretched band cannot pull the two flange halves together with even clamp load anymore. Uneven load = uneven seal = a slow exhaust or boost leak that gets worse every time the truck warms up.
• Galled T-bolt threads — heat, torque, and years of vibration gall the T-bolt threads. You can crank the nut all day and the bolt just spins — no clamping force. This is the #1 reason a rebuilt turbo leaks at the flange on the first startup.
• Deformed V-profile — the V-groove that squeezes the two flange halves together loses its angle after enough cycles. A rounded-off V-groove skates over the flange instead of pulling it together. Torque spec doesn't matter if the geometry is gone.
• Corrosion pitting — road salt, coolant leaks, and PCV moisture pit the band and the T-bolt. Pitting concentrates stress and cracks the band — usually on the highway, usually loud.

The SL-280-002 is a fresh stainless clamp with a fresh T-bolt and nut — correct band tension, correct V-geometry, correct thread engagement. One part, one shipment, one job done right.

Component Breakdown — What's In the Box

• 1 SPOOLOGIC stainless V-band clamp — formed stainless band with an integrated V-profile groove, welded stainless T-bolt bracket, stainless T-bolt, and locking nut. Ships assembled and ready to install.

Material Technology — Why Each Material Was Chosen

• Stainless steel band — austenitic stainless (300-series) holds tensile strength at exhaust temperature and resists the road-salt and moisture corrosion that eats plated steel clamps in a few winters. Stainless doesn't take a compression set as fast as plated carbon steel, so the band holds its diameter through more heat cycles.
• Formed V-profile — the V-groove is rolled into the band at a precise included angle that matches the mating flanges on the CHRA and the turbine housing. The V-angle is what converts axial band tension into radial clamp load on the two flange halves.
• Stainless T-bolt and locking nut — stainless T-bolt thread engaging a stainless locking nut. The lock feature keeps the nut from backing off under engine vibration once torqued to spec.

Install Notes

• Do not reuse the OE V-band clamp. Once heat-cycled and torqued, the band has stretched and the T-bolt threads are galled. A reused clamp cannot generate even clamp load.
• Clean both V-band flange faces before installing the new clamp. Carbon on the turbine-side flange keeps the two halves from seating fully — the clamp will torque up on a partially engaged joint and leak.
• Seat the flanges by hand first. Slide the clamp over the two seated flange halves, then start the T-bolt nut. Do not use the clamp to pull the flanges together — that bends the band.
• Torque the T-bolt nut to the turbocharger manufacturer's V-band spec in even 1/4-turn increments while tapping the band with a soft mallet to distribute load. Under-torque leaks; over-torque distorts the band and cracks the flange casting.
• Retorque after the first heat cycle. V-band clamps relax slightly after the first full warm-up. Torque check after 20-30 minutes of run time is standard practice.

Fits 2008-2010 6.4L Powerstroke

• 2008 – 2010 Ford F-250 / F-350 / F-450 / F-550 Super Duty 6.4L Powerstroke

Turbo Applications

• V2S (low-pressure stage)

Interchange / Cross-Reference Part Numbers

• 8C3Z-9P466-A
• 8C3Z9P466A

What's Included

• 1 SPOOLOGIC stainless V-band clamp with T-bolt and locking nut

Features

• Direct-fit CHRA-to-turbine housing V-band clamp for the V2S compound turbocharger low-pressure stage
• Stainless steel band, T-bolt, and locking nut — corrosion-resistant construction
• Rolled V-profile matched to the OE flange geometry
• Ships assembled and ready to install
• Sees full exhaust gas temperature at the CHRA-to-turbine-housing joint
• Backed by a 1-Year Limited Warranty

1-Year Limited Warranty

Every SPOOLOGIC V-band clamp is covered by a 1-Year Limited Warranty against defects in materials and workmanship from the date of purchase. Warranty covers replacement of the part only. Warranty does not cover labor, towing, downtime, consequential damages, failures caused by improper installation, failures caused by dirty or damaged mating surfaces, reuse of any included gasket, O-ring, or crush washer, or use outside the listed fitment.