How do I confirm pilotpart507737 fits my machine?

Compare the OEM or reference part number, machine model, engine model, and serial number. You can also submit a fitment inquiry before ordering.

In Stock

Muffler Extension Kit R66690 for John Deere 4430 4440 4630 4640 Tractors

For John Deere Spare & Replacement Parts

Spare & Replacement Parts R66690 for John Deere

OEM / REF: R66690SKU: pilotpart507737

John Deere Spare & Replacement Parts R66690 is listed under Machinery & Equipment > Spare & Replacement Parts with catalog data including Shape: Straight; Color: Black; Inside Diameter: 3-5/8". Verify fitment for John Deere Machinery & Equipment using the OEM number, mounting points, and photos of your existing part.

Stock: In stock
Condition: New
Fitment: John Deere Machinery & Equipment
Category: Spare & Replacement Parts

Fitment support before you order
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In stock — ready to order

$82.94USD/EA

~~$29,899.00~~Save 100%

Estimated delivery by quantity

Estimated delivery windows
Qty	Estimated delivery
1	Oct 22 – Oct 29
10	Oct 20 – Oct 27
50	Oct 18 – Oct 25

Estimates from today; confirm exact lead time before payment.

Quantity

Buy online now or add to your quote list for bulk pricing and fitment confirmation.

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Lead times can vary by freight route and customs. Contact support for expedited shipping.

Spare & Replacement Parts Description

Catalog specifications for SKU pilotpart507737 include Shape: Straight; Color: Black; Inside Diameter: 3-5/8"; Length: 18". The part is grouped under Machinery & Equipment > Other Machinery & Equipment > Spare & Replacement Parts for John Deere Machinery & Equipment buyers comparing OEM R66690.

Before checkout, compare OEM part number R66690, connector layout, mounting position, and machine serial number. For high-value or fitment-sensitive parts, submit the fitment form below so support can verify the match.

Part Numbers and Cross References

R66690

Specifications

Shape	Straight
Color	Black
Inside Diameter	3-5/8"
Length	18"
Note	Includes Clamp And Raincap
Part Number (John Deere)	R66690
Part Number	John Deere: R66690

Fitment Notes

Brand or application signal: John Deere Machinery & Equipment
Product family: Spare & Replacement Parts
System category: Machinery & Equipment > Other Machinery & Equipment > Spare & Replacement Parts
Recommended verification: OEM number, engine model, serial number, old part photos, and dimensions.

Shipping & Returns

Availability: InStock
Shipping: Shipping quotes can be confirmed before payment for heavy or urgent orders.
Returns: Returns are easier when fitment is confirmed before ordering.
B2B support: Bulk, fleet, and repair-shop requests can be handled through the inquiry form.

Frequently Asked Questions

How do I confirm this part fits my machine?

Match the OEM or reference number first, then verify machine model, engine model, serial number, connector layout, mounting points, and old part photos.

Can I order if my part number is not listed?

Yes. Send the old part number, machine plate, and photos through the fitment inquiry form. Support can review possible replacements or alternatives.

Is this an OEM part?

Products are indexed as replacement parts unless explicitly marked otherwise. Always compare reference numbers and confirm fitment before purchase.