Union

42596121 is CNH's current replacement for 42559146.

Compatible equipment

This part fits WHEEL LOADER - TIER 4B (NA), SERIES 3 CRAWLER DOZER TIER 3 (NA/EU), CRAWLER DOZER - TIER 3 (BR), CRAWLER DOZER TIER 3 (BR), CRAWLER DOZER - TIER 4A, CRAWLER DOZER - TIER 4B, Long Track (LT), Tier 4, Made in Brazil, Wide Track (WT), Tier 4, Made in Brazil, CRAWLER DOZER - ASN NHACXXXXX- TIER 3 (BR), CRAWLER DOZER TIER 3 (NA/EU) (HYDRO), SERIES 3 CRAWLER TIER 3, CRAWLER DOZER TIER 2 - BRAZIL, Low Ground Pressure (LGP), Bulldozer (BD) Blade, Tier 4, Made in Brazil, Low Ground Pressure (LGP), Power Angle Tilt (PAT) Blade, Tier 4, Made in Brazil, Extra Long Track (XLT), Power Angle Tilt (PAT) Blade, Tier 4, Made in Brazil, Extra Long Track (XLT), Bulldozer (BD) Blade, Tier 4, Made in Brazil, WHEEL LOADER TIER 3 (NA), WHEEL LOADER - TIER 4 (NA), WHEEL LOADER - T4B - STD LINKAGE, WHEEL LOADER - T4B - XR LINKAGE, WHEEL LOADER - T4B - XT LINKAGE, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C5040000, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C508000, BACKHOE LOADER (LIVERY) - TIER 3 NRC, BACKHOE LOADER - TIER 3 NRC, BACKHOE LOADER, 2WD - TIER 3 NRC - MY18, BACKHOE LOADER, 2WD - TIER 3 NRC - MY19, BACKHOE LOADER, 4WD - TIER 3 NRC - MY18, BACKHOE LOADER, 4WD - TIER 3 NRC - MY19, LOADER BACKHOE - TIER 3, LOADER BACKHOE - TIER 3 NRC, BACKHOE LOADER (LIVERY) - WIDE TRACK - TIER 3 NRC, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 3 NRC - MY18, BACKHOE LOADER, 4WD - WIDE TRACK - TIER 3 NRC - MY19, BACKHOE LOADER, WIDE TRACK - TIER 3, BACKHOE LOADER, WIDE TRACK - TIER 3 NRC, BACKHOE LOADER, SIDE SHIFT, TOOL CARRIER, 4WD - TIER 3 - MY19, BACKHOE LOADER, SIDE SHIFT, STRAIGHT LOADER ARM, 4WD - TIER 3 - MY21, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N8C508500, SERIES 3 LOADER BACKHOE TIER 3 (NA) - ASN N7C431854 including models 1021G, 1121G, 1150K, 1150L, 1150M LT, 1150M WT, 1150M WT/LGP, 1650L, 1650M LGP PAT, 1650M WT/LGP, 1650M XLT, 1650M XLT BD, 1650M XLT PAT, 1850K, 2050M, 2050M LGP BD, 2050M LGP PAT, 2050M LT, 2050M LT BD, 2050M LT PAT, 2050M WT/LGP, 2050M XLT, 2050M XLT BD, 2050M XLT PAT, 521E, 521F, 521G, 521G2, 580SM, 580SM+, 580SN, 580SN WT, 580ST, 580SV, 590SM, 590SM+, 590SN, 621E, 621F, 621G, 621G2, 650L, 695ST, 721D, 721E, 721F, 721G, 721G2, 750L, 821E, 821F, 821G, 821G2, 836C, 836C AWD, 845B, 850L, 850M CRAWLER DOZER, 850M LT, 850M WT, 850M WT/LGP, 856C, 856C AWD, 865B, 865B AWD, 885B, 885B AWD, 921F, 921F XR, 921G, 921G2, CX130E, CX170E LC, CX210C, CX210E LC, CX220C, CX220C HEAVY DUTY LC, CX220C SERIE 2, CX240C ME, CX250E LC.

Frequently asked questions

What is the part number?

The manufacturer part number is 42596121. It replaces 42559146.

Is this a genuine OEM part?

Yes. This is a genuine CASE Construction part.

Will this fit my machine?

See the compatible equipment list above. If your model is not listed, call us with your machine's serial number and we can confirm.

Ships nationwide. In-stock parts ordered before 2:30 PM ET ship the same business day. Your exact shipping cost and delivery estimate are calculated at checkout from your ZIP code and the part’s size and weight; oversized and truck-freight items may need extra transit time and freight charges.

Free branch pickup is also available across Ohio, Indiana, Michigan, and Kentucky — just choose it at checkout.

30-day returns. New, unused parts in original packaging may be returned within 30 days. Some items — including electrical, special-order, and direct-from-supplier parts — are non-returnable. See our full return policy.