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Cat 966 & 972 Series Wheel Loader Cylinders

Cat 966 & 972 Series Wheel Loader Cylinders parts list
Image	Fits Model	Description	Details	Part #	Price	Product Details
	See Details	966C, 966, 966R	Hydraulic Cylinder Tube		9J2433	$2,566.00	View Info
	See Details	966H	Tilt Cylinder Group		2457484	$2,959.00	View Info
	See Details	966G II, 966H, 972G II, 972H 120K, 120K 2, 120M, 12K, 12M, 12M 3, 972H	Steering Cylinder Group		3149336	$2,407.00	View Info
	See Details	324D L 966H, 972H, 966H	Tilt Cylinder Group		2448777	$6,272.00	View Info
	See Details	966H, 966K	Tilt Tractor Parts Cylinder Group		3562219	$6,808.00	View Info
	See Details	966H, 966K, 966M, 966M XE, 972H, 972K, 972M, 972M XE	Lift Cylinder Group		2424275	$7,127.00	View Info
	See Details	966H, 972H	Lift Cylinder Group		2424274	$8,510.00	View Info
	See Details	966G, 966G II, 972G, 972G II	Hydraulic Cylinder Tube		1334048	$3,915.00	View Info
	See Details	966C, 966R, 966	Lift Cylinder Group		9J2434	$3,012.00	View Info
	See Details	966G, 966G II, 972G, 972G II	Lift Cylinder Group		1332964	$4,856.00	View Info
	See Details	966G, 966G II, 972G, 972G II	Lift Cylinder Group		1332963	$4,675.00	View Info

Cat 966 & 972 Series Wheel Loader Cylinders

Lift cylinders, tilt cylinders, steering cylinders, and hydraulic cylinder tubes for Caterpillar 966 and 972 series wheel loaders. Whether you need a complete cylinder group or just the tube to rebuild a scored bore, Broken Tractor stocks the cylinders that raise the lift arms, curl the bucket, and steer your machine — all built to accept OEM-style seal kits.

Fits Models At A Glance

966, 966C, 966R, 966G, 966G II, 966H, 966K, 966M, 966M XE, 972G, 972G II, 972H, 972K, 972M, 972M XE

What's In This Category

Lift Cylinder Groups

Lift cylinder groups for the 966C/966R/966 (9J2434), the 966G/966G II/972G/972G II (1332963, 1332964), the 966H/972H (2424274), and the 966H/966K/966M/972M (2424275). These raise and lower the loader lift arms.

Tilt Cylinder Groups

Tilt cylinder groups for the 966H (2457484), the 966H/966K (3562219), and the 966H/972H (2448777, which also covers the 324D L). These curl the bucket for digging and dumping.

Steering Cylinder Groups

Steering cylinder groups for the 966G II/966H/972G II/972H (3149336, which also covers the 120K, 120M, 12K, and 12M graders) and the 962H/962K/938H tool carrier group (3149340). Restore hydraulic steering response on the articulated frame.

Hydraulic Cylinder Tubes

Replacement cylinder tubes for the 966C/966/966R (9J2433) and the 966G/966G II/972G/972G II (1334048). Replace the tube when the bore is scored but the rod and gland are still good.

Fitment Tip

The 966 and 972 span many generations (C, G, H, K, M) and their cylinders don't interchange across suffixes — a 966G lift cylinder won't fit a 966H. Several steering groups cross over to motor graders that share the same front frame. Match your model suffix and the casting number stamped on the cylinder when rebuilding. The serial number is on the left (highway) side of the machine behind the front tire. Call us with your serial and cylinder number and we'll confirm the right part.

Frequently Asked Questions

How do I tell which lift cylinder fits my Cat 966 wheel loader?

It depends on the generation. The 966C/966R/966 uses lift cylinder group 9J2434, the 966G/966G II/972G/972G II uses 1332963 or 1332964, the 966H/972H uses 2424274, and the 966H/966K/966M/972M uses 2424275. These do not interchange across generations, so identify your exact model suffix (C, G, H, K, M) and serial number before ordering. If in doubt, match the casting number stamped on your existing cylinder.

Do steering cylinders interchange between the Cat 966 and motor graders?

Yes, some do. The 3149336 steering cylinder group fits the 966G II, 966H, 972G II, and 972H loaders plus the 120K, 120M, 12K, and 12M motor graders that share the same front frame. Always confirm by serial number and casting number, since visually similar steering cylinders can differ in stroke and pin size.

Can I replace just the cylinder tube on my Cat 966 or 972?

Yes. Broken Tractor stocks 966/972 cylinder tubes separately — 9J2433 for the 966C/966/966R and 1334048 for the 966G/972G. If the bore is scored but the rod, gland, and piston are still good, replacing just the tube saves thousands over a complete cylinder group. Inspect the rod and gland first to confirm they're reusable.

Why is my Cat 966 bucket or lift arms drifting down?

Drift usually comes from worn cylinder seals or a leaking control valve, and on these loaders it often starts with contamination. Small imperfections on the rod let contaminants past the seals, damaging the bore. Hydraulic efficiency can drop as much as 20% before an operator notices. Pressure-test the cylinders — if they hold when plugged but drift when reconnected, the control valve is the issue. If a cylinder bypasses internally, reseal or replace before the contamination spreads.

Where is the serial number on a Cat 966 or 972 wheel loader?

On the 966 and 972, the serial number is on the left (highway) side of the machine behind the front tire. Pre-2001 machines use an 8-digit serial; 2001-and-newer machines use a 17-digit VIN. You need this number, plus the cylinder casting number, to order the correct cylinder or tube.

Not sure which cylinder or tube fits your machine? Call or text us at (800) 909-7060 or submit a parts request and we'll match it to your serial number.

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