ECU ECM Controller – Hydraulic Pump Module for CAT Excavators
Elevate your Caterpillar equipment with this ECU ECM Controller, an aftermarket hydraulic pump controller built for precision. Compatible with:
CAT excavators (311D LRR, 312D, 312D L, 312D2, 312D2 GC, 312D2 L, 313D, 313D2, 313D2 LGP, 314D CR, 314D LCR, 315D L, 318D L, 318D2 L, 319D, 319D L, 319D LN, 320D, 320D FM, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 320D2, 320D2 GC, 320D2 L, 321D LCR, 323D, 323D L, 323D LN, 323D SA, 324D, 324D FM, 324D FM LL, 324D L, 324D LN, 325D, 325D FM, 325D FM LL, 325D L, 325D MH, 326D L, 328D LCR, 329D, 329D L, 329D LN, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 GC, 336D2 L, 340D L, 340D2 L, 345C, 345D, 345D L, 345D L VG, 349D, 349D L, 349D2, 349D2 L, 374D L, 390D, 390D L),
Generator sets (3512),
Material handlers (M325D L MH, M325D MH),
Mini hydraulic excavators (307D, 308D),
Mobile hydraulic power units (323D L, 324D LN, 325D, 325D L, 329D L, 330D, 330D L, 336D, 336D L, 340D2 L, 345D, 349D L, 349D2),
And wheeled excavators (M330D),
This direct-replacement part (numbers 366-8821, 3668821, 20R-2323) ensures reliable hydraulic performance.

Key Features
Broad Fit: Matches 320D L, 336D2, 349D, and more—verify numbers (3668821).
Quality Build: Built to factory specs for durable, consistent operation.
Hydraulic Mastery: Optimizes pump efficiency with programming.
Easy Install: Direct replacement simplifies setup when programmed.
Warranty: Includes a 12-month warranty with repair or replacement.
Installation Notes
Kindly Note: Requires programming. Provide ECU part number, vehicle/engine model, and serial numbers after purchase. Professional installation recommended.
Why Choose Us?
Trusted Reliability: Tested for excellence with fast after-sales support.
Customer-First: Transparent pricing—covers only product, shipping, and handling (customs/import taxes are buyer's responsibility).
Applications
Fits 312D2, 330D L, 308D, 3512, and all listed CAT models. Upgrade your excavator today and keep it running strong!
Track Your Order:When it ships, an email will arrive to you containing the tracking number with a link.