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SPM-HEP-5242 is the complete S2A type turbocharger: the cast iron turbine housing with its four bolt exhaust flange, the aluminium compressor housing with the round air inlet and outlet, and the centre housing with the oil feed and drain ports. It is used on John Deere 4045T engine machines. This aftermarket version is made to the same mounting and connections as the original, so it fits where the old one came off.
It replaces John Deere 471049-9001 and John Deere RE508971.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | Turbocharger |
| Replaces | John Deere 471049-9001 |
| Type | Turbocharger, complete |
| Engine | John Deere 4045T |
| Machine | John Deere 450G, 455G, 550G, 555G, 650G |
| Cross references | John Deere RE508971 |
| Fits | John Deere 450G, 455G, 550G, 555G and 650G crawlers and machines with the John Deere 4045T engine |
| Condition | New, aftermarket |
| Stat. HS-Code | 841480 |
| Country of Manufacture | China |
John Deere machines
Check the part number on your old unit before ordering.
| John Deere Part No.(SPM Part No.) | Fits |
|---|---|
| 471049-9001(SPM-HEP-5242) | John Deere 450G, 455G, 550G, 555G and 650G crawlers and machines with the John Deere 4045T engine |
| RE508971(SPM-HEP-5242) | John Deere 450G, 455G, 550G, 555G and 650G crawlers and machines with the John Deere 4045T engine |
What it does
Exhaust gas spins the turbine, which drives the compressor wheel on the same shaft and pushes more air into the engine. More air lets the engine burn more fuel cleanly, giving the rated power.
Where it is used
Made for the John Deere 450G, 455G, 550G, 555G and 1 more. The full list is in the tables above.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| Amazon (JZGRDN) | USD 285.27 | 3 Nov 2026 |
| FridayParts | USD 299.65 | 3 Nov 2026 |
| Amazon (Prosper-Trading) | USD 310.66 | 3 Nov 2026 |
| Amazon (Chengdu Xiangnini Keji) | USD 314.00 | 3 Nov 2026 |
| eBay, aftermarket seller | USD 428.00 | 3 Nov 2026 |
| Quality Farm Supply | USD 1,010.99 | 3 Nov 2026 |
| Spare Part Mart | USD 190.57 | Today |
Our price of USD 190.57 is 33% to 81% 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.
Yes, it was made for the John Deere 450G, and 4 more listed under compatible equipment. Check the old turbocharger is marked 471049-9001 or one of the cross references, because makers change parts between serial ranges.
On the John Deere 450G, often as long as the engine, 8,000 hours or more, when the oil and air filters are kept on schedule. Most turbos fail early from oil or dirt problems, not age.
Blue or black smoke, a whistle or siren noise, loss of power, oil in the intake or exhaust, or the shaft rubbing the housing.
Pour clean engine oil into the oil inlet and turn the shaft by hand, then crank the engine with the fuel cut until oil pressure shows. Let it idle for a minute before load.
A little radial play is normal on journal bearing turbos. Wheels touching the housing, or any noticeable end float, are not.
No. It is an aftermarket turbocharger made to replace the John Deere 471049-9001. It is not made by the original manufacturer; the number only shows what it replaces.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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