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Caterpillar 154-3197 is the key start switch with five wire harness, sealed four way plug and two keys. It is used on Caterpillar 301 to 304 mini excavators, TH telehandlers and CB compactors (3003, 3013, 3024 and 3054C engines). This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Start Switch |
| Replaces | Caterpillar 154-3197 |
| Type | Key start switch, five wire harness with sealed plug |
| Keys | 2 keys supplied |
| Fits | Caterpillar 301.5; Caterpillar 301.6; Caterpillar 301.8; Caterpillar 302.5; Caterpillar 303.5; Caterpillar 304.5; Caterpillar TH210; Caterpillar TH215; Caterpillar TH255C; Caterpillar CB-214D; Caterpillar CB-224D; Caterpillar CB-534D |
| Condition | New, aftermarket |
| Stat. HS-Code | 853650 |
Caterpillar machines
Check the part number on your old unit before ordering.
| Caterpillar Part No.(SPM Part No.) | Fits |
|---|---|
| 154-3197(SPM-HEP-3130) | Caterpillar 301.5, Caterpillar 301.6, Caterpillar 301.8, Caterpillar 302.5, Caterpillar 303.5, Caterpillar 304.5, Caterpillar TH210, Caterpillar TH215, Caterpillar TH255C, Caterpillar CB-214D, Caterpillar CB-224D, Caterpillar CB-534D |
Machine will not start or power up
A worn key switch is a common cause of no-start faults once the batteries, fuses and starter relay check out.
Key has to be wiggled
A switch that only works when the key is held or jiggled has worn contacts and will fail completely soon.
Lost keys or damaged barrel
A new switch comes with its own keys, which is often quicker than finding a matching key or repairing the barrel.
Fitting tips
Disconnect the battery first, note the wire positions, and fit the new switch with the same harness plug.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| eBay (12 aftermarket sellers) | USD 49.88 to 56.58 | 7 Oct 2026 |
| SINOCMP | USD 99.00 | 7 Oct 2026 |
| Fab Heavy Parts | USD 308.00 | 7 Oct 2026 |
| Spare Part Mart | USD 39.90 | Today |
Our price of USD 39.90 is 20% to 87% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
No. It is an aftermarket part made to fit in place of Caterpillar 154-3197. It is not made by or affiliated with Caterpillar; the Caterpillar part number is used only to show what it replaces.
It fits Caterpillar 301.5; Caterpillar 301.6; Caterpillar 301.8; Caterpillar 302.5; Caterpillar 303.5; Caterpillar 304.5; Caterpillar TH210; Caterpillar TH215; Caterpillar TH255C; Caterpillar CB-214D; Caterpillar CB-224D; Caterpillar CB-534D. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It has the same mounting and electrical connector as the original. Check the plug and terminals match your old part, and test it before putting the machine back to work.
Yes, we ship worldwide. Shipping is calculated at checkout, and every order is covered by our 30 day money back guarantee and price beat guarantee.
Prices depend on your postcode.
In USD for the quantity selected. The exact cost is confirmed at checkout.
