Heating and Cooling› Fans

SUBURBAN MFG

P40/30 WIRING KIT (RELAY BOARD)

$55.64

SKU: S09E 521052

In Stock
In Stock
Ships by Jun 14
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Description

The 521052 Suburban RV Furnace P-40/30 Fan Control Wiring Kit is an OEM wiring and control-interface kit for Suburban P-30 and P-40 furnaces. This kit is essential for correctly sequencing the blower motor, safety switches, and ignition board in these higher-output furnaces.

When the original harness becomes damaged or brittle, this kit restores factory-correct operation, ensuring the furnace runs through its ignition and shutdown cycles safely. It includes the correct connectors, wire lengths, and color coding to match OEM specifications, preventing issues like blower-only operation, no-heat conditions, or intermittent cycling.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandSUBURBAN MFG
Part NumberS09E 521052

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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