U31ESR-N

Genuine Denso OEM · Part number 4187

The U31ESR-N is a genuine Denso accessories part, OEM part number 4187. Dykes Motors sells it for $12.49. It is in stock to order online, or you can pick it up at our store. Not sure it fits your machine? Send the model and serial number to the parts desk before you order. Dykes Motors is an authorized Bobcat, LS Tractor, and Ferris dealer with genuine parts and service on site.

Price and availability checked Oct 21, 2026

$12.49

We accept Visa, Mastercard, American Express, Discover, Apple Pay, Google Pay, Amazon Pay, PayPal, Venmo, and Klarna.

In stock. Ships in 2 to 3 business days, arrives in 1 to 2 more — by Wed, Oct 28. Free shipping on every parts order. Free pickup at 3069 Hwy 49.

Genuine OEM part. Manufacturer warranty honored at our dealership.

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Details

The Denso U31ESR-N (OEM #4187) is a genuine Denso spark plug designed to provide reliable ignition in compatible equipment engines. This is an engine and model-specific part—please confirm your engine number against the fitment list on this page before ordering to ensure proper compatibility. As an OEM Denso component, it meets the original equipment manufacturer specifications for your application.

Verify your fitment before you order

Text your equipment model and serial number to 601.516.7255 and we confirm the exact part before you pay. Prefer to talk? Call (601) 516-7255.

Questions about part 4187

What machines does part 4187 fit?

We do not list a confirmed fitment for part 4187 on this page. Send the model and serial number of your machine to the parts desk and we will check it before you order.

How much is part 4187?

Dykes Motors sells the U31ESR-N, part number 4187, for $12.49. Price and availability were checked Oct 21, 2026.

Is part 4187 a genuine Denso part?

Yes. Part 4187 is a genuine Denso OEM part.

Is part 4187 in stock?

Yes. It is in stock to order online, or you can pick it up at our store.

$12.494187 U31ESR-N

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