Right Cab Door Lock Latch for Fiat 55-66 and New Holland SIAC 76013980 65417021

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Right Cab Door Lock Latch for Fiat 55-66 and New Holland SIAC 76013980 65417021

Right side tractor cab door lock mechanism, part number 65417021 (CNH OEM references 76013980, 9960912). Engineered to restore tight, reliable, and rattle-free door closure on original equipment cabs. Directly compatible with Fiat 66 Series (55-66) fitted with Super Comfort and TS / SIAC cabins, as well as New Holland SIAC TS 23, TS 24, TS 25, and TS 28 cab models.

Fits

ManufacturerFiat / FiatAgriSpecific Cab PackagesNew Holland

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Description

Key features

Two-Stage Positive Rotary Safety CatchTwo-position progressive engagement (safety catch and full lock) prevents accidental door unlatching under harsh field vibration, chassis flexing, and rough terrain haulage.

Built Specifically for Siac & Super Comfort Enclosures (RH Side)Hole spacing, backset, and casing dimensions strictly conform to original SIAC and Fiat Super Comfort right-hand door profiles, ensuring direct replacement without drilling or modifications.

Heavy-Duty Tropicalized Zinc PlatingRugged metallic housing and internal pivot points resist oxidation caused by constant humidity, field mud, chemical fertilizer dust, and high-pressure water washing.

High-Tensile Internal Return Spring PackCalibrated spring pack delivers smooth, positive handle return, eliminating handle free-play, rattle, and sticky mechanical actuation.

Superior Cab Ingress & Sound ProtectionExerts uniform clamping pressure against the door rubber seal, preserving operator noise dampening and cabin climate control efficiency.

Compatibility

Manufacturer	Series / Cab ConfigurationSupported Tractor Models & Cab Frames
Fiat / FiatAgri	66 Series55-66 (and related derivatives with factory cab)
Specific Cab Packages	Super Comfort Cab • TS / SIAC Cab
New Holland	Siac Cab EnclosuresTS 23TS 24TS 25TS 28

Specifications

Commercial Part Number	65417021
Mounting Location / Side	Right-Hand (RH - Passenger Side Door)
Fiat / FiatAgri OEM References	76013980, 9960912
New Holland OEM Reference	76013980
Component Classification	Mechanical internal cabin door lock latch mechanism
Cabin Structure Application	Super Comfort cabins & TS / SIAC cab series (TS 23, 24, 25, 28)
Structural Material	High-tensile zinc-plated stamped steel with wear-resistant internal pivot pins
Actuation Mechanism	Dual-stage rotary latch with linkage rod attachment sockets