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Hitachi 4123994 is the front rubber engine mounting cushion, a steel cradle bonded in rubber with a threaded stud and nut on the side. It is used on Hitachi EX200 series excavators, at the front of the engine. This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
Sold in packs of 2, the pair fitted at that end of the engine. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Pack Size | 2 pieces per pack |
| Part Type | Front Engine Mount |
| Replaces | Hitachi 4123994 |
| Position | Front engine mount (2 used per machine) |
| Type | Rubber bonded steel cradle with side stud and nut |
| Fits | Hitachi EX100W; Hitachi EX100WD; Hitachi EX125WD-5; Hitachi EX160WD; Hitachi EX200; Hitachi EX200-2; Hitachi EX200-3; Hitachi EX200-5; Hitachi EX200K; Hitachi EX200LC-5HHE; Hitachi EX200SS-5; Hitachi EX210H-5; Hitachi EX225USR; Hitachi ZX125W |
| Condition | New, aftermarket |
| Stat. HS-Code | 401699 |
| Country of Manufacture | China |
Hitachi machines
Check the part number on your old unit before ordering.
| Hitachi Part No.(SPM Part No.) | Fits |
|---|---|
| 4123994(SPM-HEP-4042) | Hitachi EX100W, Hitachi EX100WD, Hitachi EX125WD-5, Hitachi EX160WD, Hitachi EX200, Hitachi EX200-2, Hitachi EX200-3, Hitachi EX200-5, Hitachi EX200K, Hitachi EX200LC-5HHE, Hitachi EX200SS-5, Hitachi EX210H-5, Hitachi EX225USR, Hitachi ZX125W |
Engine shake and cab vibration
A mount whose rubber has cracked, gone hard or torn away from the steel lets the engine shake on its bed. The cab buzzes at idle and the frame takes the knocks.
Engine sitting low or touching the frame
A collapsed mount lets the engine drop, so the fan, hoses or exhaust can rub the shroud and frame. Check the gap at each mount with the engine running.
Replace in pairs
Mounts at the same end of the engine carry the load together. A new mount beside a tired one takes more than its share, so change the pair.
Engine out or major repair
With the engine lifted for a rebuild, a flywheel housing or a pump job, new mounts cost little and save lifting it again later.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| FridayParts (pack of 2) | USD 166.53 | 23 Oct 2026 |
| eBay (5 aftermarket sellers) (2 singles) | USD 174.58 to 332.28 | 26 Oct 2026 |
| Spare Part Mart (pack of 2) | USD 133.22 | Today |
Our price of USD 133.22 is 20% to 60% 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 Hitachi 4123994. It is not made by or affiliated with Hitachi; the Hitachi part number is used only to show what it replaces.
It fits Hitachi EX100W; Hitachi EX100WD; Hitachi EX125WD-5; Hitachi EX160WD; Hitachi EX200; Hitachi EX200-2; Hitachi EX200-3; Hitachi EX200-5; Hitachi EX200K; Hitachi EX200LC-5HHE; Hitachi EX200SS-5; Hitachi EX210H-5; Hitachi EX225USR; Hitachi ZX125W. Machines change parts between serial number ranges, so check the number on your old part or in your parts manual.
It is made to the same bracket shape, stud and hole layout and height as the original. Take the engine weight with a hoist or jack, change the mounts one side at a time and tighten the nuts to the machine maker's torque.
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Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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