Fits: New Holland 565, New Holland 570, New Holland 575, New Holland 580, New Holland 70 + 2 more
local pickup same day
usually ships same day
Free shipping on parts orders $75+
To the 48 contiguous states, with a CROP account.
local pickup same day
usually ships same day
Free shipping on parts orders $75+
To the 48 contiguous states, with a CROP account.
Overview
Fits the New Holland 70 and 75 — this wire harness carries power or signal. Fits 7 New Holland models across 2 series.
Specifications
Compatibility
Type your model to confirm it fits — or browse the full compatibility list below.
| Model | Series |
|---|---|
| 70 | BALE THROWER |
| 75 | BALE THROWER |
| 565 | SMALL |
| 570 | SMALL |
| 575 | SMALL |
| 580 | SMALL |
| 77 | BALE THROWER |
Not sure it fits? Browse the full parts catalogue to check every listed part.
Parts diagrams
Every diagram this part appears in — jump straight to its callout, or browse the whole assembly. Each diagram opens with every part numbered, and each callout links back to its own part page.
| Assembly | Machine | Callout | Parts | View |
|---|---|---|---|---|
 | New Holland 70 · Complete Machine | #1 | 34 | View |
 | New Holland 77 · Complete Machine | #1 | 33 | View |
 | New Holland 70 · Complete Machine | #12 | 30 | View |
 | New Holland 580 · Complete Machine | #1 | 45 | View |
 | New Holland 565 · Complete Machine | #1 | 47 | View |
Part guide
New Holland 603721 is the wire harness Clinton Tractor supplies for this application. It is listed as fitting 7 New Holland models.
Fits: New Holland 565, New Holland 570, New Holland 575, New Holland 580, New Holland 70 + 2 more. Commonly ordered for the 70, 75, 565. If your machine isn't listed, check the serial number before ordering.
local pickup same day
usually ships same day
Free shipping on parts orders $75+
To the 48 contiguous states, with a CROP account.
local pickup same day
usually ships same day
Free shipping on parts orders $75+
To the 48 contiguous states, with a CROP account.
Questions
Quick answers to what operators ask most before they order this part.
It fits 7 New Holland models, including the 70, 75, 565 and 4 more.
Yes — 603721 is a genuine New Holland OEM wire harness, supplied new by Clinton Tractor.
Match your model and serial number against the fitment list on this page — it covers the New Holland 70 — or send your serial to Clinton Tractor and we'll confirm 603721.
Reviews
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