JCB Excavator Starter & Alternator

JCB Excavator Starter & Alternator parts list
Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	3CX COMPACT, 48Z-1 T3, 48Z-1 T4, 51R-1 T3, 51R-1 T4, 525-60, 525-60AG, 55Z-1 T3, 55Z-1 T4, 57C-1 T3, 57C-1 T4, 85Z-1, 86C-1, 86C-1 TAB	Engine Starter Motor		333/H5787	$340.00	View Info

Starter motors and alternators for JCB compact and midi excavators, covering a range of T3 and T4 engine configurations across the Z-series, C-series, and R-series machine lines. Replacement electrical components matched to OEM specifications for reliable cold-start performance and charging system output.

Fits Models At A Glance

Z-Series Compact Excavators: 48Z-1 T3, 48Z-1 T4, 55Z-1 T3, 55Z-1 T4, 85Z-1
C-Series Compact Excavators: 57C-1 T3, 57C-1 T4, 86C-1, 86C-1 TAB
R-Series Compact Excavators: 51R-1 T3, 51R-1 T4

Key Notes

Part Types: Engine starter motors; alternators for JCB compact excavator applications
Engine Compatibility: Covers Tier 3 and Tier 4 engine variants within the same model line
OEM Reference: Parts cross-reference to JCB part number 333/H5787 and related electrical components
Condition: New replacement units available for both starter and charging system applications

Why Choose Broken Tractor

✅ OEM-matched fitment for JCB compact excavators
✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH
✅ Knowledgeable staff ready to verify part compatibility

Frequently Asked Questions

What starter fits a JCB 55Z-1 excavator?

Broken Tractor offers the JCB Engine Starter Motor, SKU 333/H5787, which fits both the 55Z-1 T3 and 55Z-1 T4 compact excavators. The same starter also fits the 48Z-1 T3, 48Z-1 T4 and 85Z-1 in the Z-series line. Compare the part number on your old starter to 333/H5787 to confirm the match.

Which JCB excavators use starter motor 333/H5787?

The JCB 333/H5787 starter fits the 48Z-1 T3, 48Z-1 T4, 51R-1 T3, 51R-1 T4, 55Z-1 T3, 55Z-1 T4, 57C-1 T3, 57C-1 T4, 85Z-1, 86C-1 and 86C-1 TAB excavators. That covers JCB Z-series, C-series and R-series compact and midi excavators.

Does the same starter fit both Tier 3 and Tier 4 JCB excavators?

Yes, the 333/H5787 starter fits both the T3 and T4 versions of the JCB 48Z-1, 51R-1, 55Z-1 and 57C-1 excavators. You do not need a different starter just because your machine has the Tier 4 engine instead of the Tier 3.

Is the replacement starter for a JCB 86C-1 new or rebuilt?

The starter Broken Tractor offers for the JCB 86C-1 and 86C-1 TAB is a new replacement unit, not a rebuilt core. It is built to match OEM specifications for reliable cold-start performance.

How do I make sure I order the right starter or alternator for my JCB excavator?

Check the part number on your existing starter or alternator and match it to the listing, since electrical parts can vary by model and engine configuration. Have your model and serial number ready if you are unsure. Our parts team can verify compatibility before you order, call (800) 909-7060.