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100% New OEM-Quality
Precision Manufactured
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30-Day Free Returns
No Questions Asked
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Same-Day Shipping
Orders Before 2PM PST
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25800+ Verified Ratings
99.7% positive on eBay
OEM Cross Reference
Search by any of these part numbers — this part replaces all of them:
3637372M91
Primary OEM Part Number
3641250M91
Alternate Cross Reference
747597M1
Alternate Cross Reference
747597M91
Alternate Cross Reference
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Fits These Engines
- •40B
- •50A
Read the engine plate, not the machine badge — the same chassis ships with different engines.
Why Rebuilders Trust Arko
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Built to Spec
Aftermarket replacement manufactured to the original fitment specification. Verify the reference number and it drops in.
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People Who Know Parts
Call (818) 261-3896 and someone who works on these every day confirms fitment before you order.
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Risk-Free Purchase
30-day free returns and a 1-year manufacturer defect warranty. If it is not the right fit, send it back.
25800+ verified ratings · 99.7% positive · Top Rated Plus on eBay. Source: eBay store feedback profile. Real seller feedback — we do not publish invented product reviews.
Get It Fitted Right
Order before 2PM PST for same-day shipping. Free returns within 30 days if it is not the right fit.
Add to Cart — $51.99