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Pella 03408 / 048290 Architect & Designer Casement Operator & Cam Lock Assembly (Casting 0C57) Engineering Diagram
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SPECFOUNDRY SKU: SF-WIN-103 · BRAND REF: Pella / Truth OEM

Pella 03408 / 048290 Architect & Designer Casement Operator & Cam Lock Assembly (Casting 0C57)

Stamped Casting / OEM Numbers: 03408 0C57 048290 048291 36-184 053726

Compatible Units: Pella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008)

Critical Dimensions & Spec: 9-1/2" center-to-center steel arm; 3-hole triangular sill flange; includes matching 03408 / 0C57 jamb lock lever spec

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Pre-Order Dimensional Verification Checklist

OEM Cross-Reference & Stamped Casting Number Table

Use this cross-reference table to confirm that the number stamped or printed on your original hardware or circuit board corresponds to SpecFoundry SKU SF-WIN-103:

Stamped / OEM Part Number Manufacturer / System Brand Compatible Models & Years SpecFoundry Replacement SKU
03408Pella / Truth OEMPella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008)Direct Match (SF-WIN-103)
0C57Pella / Truth OEMPella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008)Direct Match (SF-WIN-103)
048290Pella / Truth OEMPella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008)Direct Match (SF-WIN-103)
048291Pella / Truth OEMPella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008)Direct Match (SF-WIN-103)
36-184Pella / Truth OEMPella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008)Direct Match (SF-WIN-103)
053726Pella / Truth OEMPella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008)Direct Match (SF-WIN-103)

Common Failure Symptoms Solved by SF-WIN-103

Technicians and property owners typically replace 03408 when experiencing one or more of the following failure modes:

  • Pella casement crank binds halfway open
  • Broken die-cast lock hook on 03408 / 0C57 jamb lock preventing weather seal
  • Stripped spline bore on legacy Pella crank handle

Step-by-Step Dimensional Verification & Installation Notes

Pry up interior wood sill stop trim carefully, remove the 3 sill mounting screws, unhook nylon shoe from sash guide channel, and bolt replacement operator directly into factory holes.

Related Technical Guide: Truth Hardware Casement Window Operator Stamped Casting Number Identification Guide →

Frequently Asked Technical Questions (03408)

Where is the casting or OEM part number (03408 / 0C57 / 048290) stamped on this part?

On Pella / Truth OEM assemblies, look for the stamped or die-cast numbers (03408, 0C57, 048290, 048291, 36-184, 053726) on the underside of the metal housing, along the link arm, on the stainless hinge track, or printed on the circuit board/valve label. Note that casting numbers identify the housing casting, so always confirm critical dimensions (9-1/2" center-to-center steel arm; 3-hole triangular sill flange; includes matching 03408 / 0C57 jamb lock lever spec) as well.

Does SpecFoundry SKU SF-WIN-103 directly replace OEM part 03408 (03408, 0C57, 048290, 048291, 36-184, 053726)?

Yes. SF-WIN-103 is verified to match the mounting footprint, electrical/mechanical ratings, and dimensional envelope of Pella / Truth OEM 03408, 0C57, 048290, 048291, 36-184, 053726 used on Pella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008).

What measurements should I verify before ordering SF-WIN-103?

Before ordering, verify: (1) Stamped or OEM code matches one of 03408, 0C57, 048290, 048291, 36-184, 053726; (2) Dimensional spec matches: 9-1/2" center-to-center steel arm; 3-hole triangular sill flange; includes matching 03408 / 0C57 jamb lock lever spec; and (3) Application matches: Pella ProLine, Architect Series & Designer Series Wood/Clad Casement Windows (1985–2008).

How fast does SF-WIN-103 ship and what payment methods are accepted?

SF-WIN-103 ships within 1–2 business days from our US warehouse network. Flat-rate US Ground shipping is $8.95, or FREE on orders of $150+. You can check out online immediately via PayPal, Venmo, Credit/Debit Card, or request an Instant Card Payment Link / Net-30 Commercial PO Invoice.

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