Cat 307D-320D Excavator Key Start Ignition Switch 2552751 – D and D2 Series

Fits Models At A Glance:

• Caterpillar Mini Excavators: 307D, 308D
• Caterpillar Excavators – D / D2 Series: 311D LRR, 311F LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 314D CR, 314D LCR, 315D L, 318D L, 318D2 L, 319D L, 319D LN, 320D, 320D FM, 320D GC, 320D L, 320D LN

Key Notes:

• Part Number(s): 2552751 (255-2751)
• Application: Key start switch group for the D-series excavator console
• Serial Number Notes: Cataloged across the D and D2 series excavators listed; the Cat EPC list continues past 320D LN into the 321D–336D range. Sister switch 2552752 is the 4-position (AID-OFF-RUN-START) version used on trucks and wheel loaders — this is the excavator switch.
• Condition: Aftermarket replacement part

Common Use Case or Symptoms:

Use when the key has to be jiggled to crank, will not return from start, or the machine dies when the key settles to run on a Cat 320D or 312D.

Why Choose Broken Tractor:

• ✅ D-series excavator switch, not the truck version — Cat's 2552751 and 2552752 are one digit apart and different switches — we name both.
• ✅ Two dozen excavators covered — 307D through 320D LN and beyond.
• ✅ ready to ship from our U.S. warehouses — Louisiana and Ohio.