3526-4121 – Tri & Quad Prongs – Bolt Circle Dia 120MM – Butt Dia 2.844″ – Face To Weld 1.638

The 3526-4121 tri prong is the weld-in metric driveshaft connector used on European and import vehicles that use a 3-bolt or 4-bolt prong flange connection instead of a standard yoke. The 3526-4121 tri prong welds onto the driveshaft tube and bolts to the differential flange — bolt circle diameter and butt diameter are the two critical specs, both in metric dimensions.

3526-4121 Tri Prong — Metric Bolt Circle & Tube Dimensions

The 3526-4121 tri prong specs: 120MM bolt circle | THRD 12x1.5 bolt holes | 2.844" butt dia | 1.638"" face-to-weld | fits 3.000X0.083 tube. DODGE SPRINTER. Bolt circle is metric — measure in millimeters against your diff flange, not inches. Butt diameter must match your tube OD for a centered weld joint. Face-to-weld determines how much of the total shaft length this connector consumes.

Weld prep on the 3526-4121 tri prong: butt it squarely against the tube end, check alignment before tacking, verify runout before final weld. Metric bolt patterns on European flanges vary across manufacturers and model years — measure your actual diff flange, don't assume from the vehicle spec sheet.

Key Features

• Bolt circle: 120MM — metric, must match diff flange exactly
• Bolt hole dia: THRD 12x1.5 — metric hole dimension
• Butt dia: 2.844" — must match tube OD for centered weld
• Face-to-weld: 1.638"" — length consumed in shaft assembly
• Nose bushing dia: 31MM — centers prong in flange bore
• Tube compatibility: 3.000X0.083
• Note: DODGE SPRINTER

Specifications

• SKU: 3526-4121
• Brand: UDS
• Bolt Circle: 120MM
• Bolt Hole Dia: THRD 12x1.5
• Butt Dia: 2.844"
• Face to Weld: 1.638""
• Nose Bushing: 31MM
• Tube Fit: 3.000X0.083
• Notes: DODGE SPRINTER