John Deere 870 radiator wanted (pn m804389)

RussL · Aug 27, 2022

Looking for a radiator for a John Deere 870 (pn m804380.) Anyone know where I could find one? I've searched multiple aftermarket suppliers but no luck.
My mom was using the tractor and evidently loaned it out over the years.
When I went to look it over, someone had replaced the radiator with a Toyo Radiator (sigh.) The Toyo has a hole in it now which is weirdly in the middle of the radiator, but the pre-screen is untouched. Rock kickback?

Any pointers would be helpful.

Russ

bmaverick · Aug 28, 2022

RussL said:
Looking for a radiator for a John Deere 870 (pn m804380.) Anyone know where I could find one? I've searched multiple aftermarket suppliers but no luck.
My mom was using the tractor and evidently loaned it out over the years.
When I went to look it over, someone had replaced the radiator with a Toyo Radiator (sigh.) The Toyo has a hole in it now which is weirdly in the middle of the radiator, but the pre-screen is untouched. Rock kickback?

Any pointers would be helpful.

Russ

Sadly, Deere isn't supporting much for the 50, 55, 70 or 90 series tractors since the supply chain is crippled. Yanmar has made compact tractors for Deere for the past 45+ years.

Yanmar made these 70 & 90 machines as kit tractors. That is, engine frame and axles came into the Deere factory. The open question is, did Yanmar ship these with a radiator to Deere as well. If they did, then you have a possible way to finding a replacement.

The Yanmar engine in your machine is the Yanmar 3TN84. Its one of the most popular engine families. With that said, there are about 3 radiator styles matching to this engine. I bet one matches your JD870.

The Yanmar F or FX series aligns with your 70 series.

Yanmar radiator for F18, F18D, F20, FX20, F22, FX22, F24, FX24
p/n 129157-44500 21 × 17.5