250-2503 Hydraulic Pump Seal Kit for Caterpillar 320D 324D 325D 329D 320C 318C 321D LCR 323D L 326D L

250-2503 Hydraulic Pump Seal Kit – Premium Aftermarket Solution for Caterpillar Excavators

Restore peak hydraulic power and entirely eliminate fluid leaks with this professional-grade 250-2503 hydraulic pump seal kit. Specifically engineered for Caterpillar’s highly popular excavators and mobile hydraulic power units, including the 320D, 324D, 325D, and 329D series. Hydraulic pumps on these heavy earthmovers endure continuous high-pressure cycles in demanding work spaces; manufactured by WINSCHEN utilizing premium elastomeric and polyurethane materials, these seals are built to withstand severe construction site conditions.

Key Features

Optimized Hydraulic Power: Precision-engineered seals prevent internal pressure loss, ensuring your Cat hydraulic pump maintains maximum flow and efficiency without performance drop.
Direct OEM Compatibility: Guaranteed to seamlessly match Caterpillar factory specifications for the 250-2503 pump group across various models, facilitating a precise and straightforward installation.
Heavy-Duty Durability: Highly resistant to severe hydraulic pressure spikes, elevated operating temperatures, and environmental contaminants such as abrasive dirt and moisture.
Comprehensive Overhaul Kit: Includes all essential service parts required for a complete, reliable, and leak-free hydraulic pump rebuild.
Minimize Equipment Downtime: A dependable, cost-effective aftermarket alternative from WINSCHEN that reduces maintenance overhead while keeping your heavy earthmoving machinery producing.

Compatible Equipment Models

Excavators: 318C, 319C, 320C, 320C FM, 320C L, 320D, 320D FM, 320D FM RR, 320D GC, 320D L, 320D LN, 320D LRR, 320D RR, 321C, 321D LCR, 322C, 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, M325D MH, M325D L MH Mobile Hyd Power Units: 323D L, 323D LN, 324D LN, 325D, 329D L Caterpillar

Seal Kit Related Parts

Part No	Qty	Parts name
096-3983	1	RING-RETAINING
9T-0835	1	RING-RETAINING
129-7855	1	GASKET
129-7857	1	GASKET
129-7921	2	RING-RETAINING
341-2862	1	SEAL-LIP TYPE
273-8314	1	SEAL-O-RING
095-0946	2	RING-RETAINING
096-3944	1	SEAL-O-RING
189-9763	8	SEAL-O-RING
193-1736	4	SEAL-O-RING
3K-0360	2	SEAL-O-RING
7M-8485	2	SEAL-O-RING
273-8315	2	SEAL-O-RING

Specifications

Part Number	250-2503 (2502503)
Part Type	Hydraulic Pump Seal Kit / Service Kit
Application	Hydraulic Cylinder Rebuild
Brand	WINSCHEN
Country of Origin	China
SKU	CTC-250-2503
MOQ	1 Set
Delivery Time	1-3 business days

Need to confirm compatibility for your specific Cat machine. We offer rapid global shipping to minimize your machine’s downtime.

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