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Arm Cylinder Seal Kit 1373767 137-3767 Fits for Caterpillar CAT 320B 320C 322C 538 Engine 3066 3116 3126 3126B C7 C7.1 is backordered and will ship as soon as it is back in stock.
Powering 10,000+ Commercial Fleets
One Year Warranty
Easy 60-day Return
Expert support & Fitment Guarantee
This Arm Cylinder Seal Kit 1373767 is a new aftermarket replacement designed to restore the sealing performance of hydraulic cylinders on various Caterpillar heavy equipment models. The kit includes all necessary seals to ensure reliable operation and prevent leaks, making it essential for maintaining the hydraulic system’s efficiency and longevity.
Fab Heavy Parts is excited to offer a 12-month warranty on all new replacement/aftermarket parts starting from your original purchase date.
Enjoy peace of mind with Fab Heavy Parts!
For more warranty details, please check out our warranty policy.
Estimated delivery time 3-6 workdays
We don't have a core charge for any products.
To start a return, please use our return portal. Items should be unused, not installed, clean, in their original packaging and accompanied by proof of purchase. Please contact support if you need help with the current return instructions or applicable costs.
Orders placed within one hour and not yet fulfilled can be cancelled from the customer order page. After one hour, or once the order has been fulfilled, please contact support for the next steps.
Available payment methods include major credit and debit cards, PayPal, Apple Pay, Google Pay, Shop Pay and Klarna. Availability can vary by order and checkout, so the payment options shown at checkout apply.
Most packages delivered within New Zealand arrive in 4–7 working days. Packages over 68 kg can take 5–10 working days. Timing can also vary with product availability, destination, shipping service, customs processing, weekends, public holidays or carrier delays.
New Zealand orders are billed in NZD.
Compare the listed part number, machine make, model, engine details and specifications with your equipment records. Fitment can vary by configuration and serial range, so contact support with the part number and machine details if you are unsure. Fitment should be confirmed before installation.
Mailed & Couriered Shipments (Online Shopping)
For NZ$1,000 or less goods value, no customs duty or border entry fees are collected by the New Zealand Customs Service.
For over NZ$1,000 customs value, formal customs entry is required and the customer must pay 15% GST, applicable customs duties, and border processing fees such as the Import Entry Transaction Fee.
This Arm Cylinder Seal Kit 1373767 is a new aftermarket replacement designed to restore the sealing performance of hydraulic cylinders on various Caterpillar heavy equipment models. The kit includes all necessary seals to ensure reliable operation and prevent leaks, making it essential for maintaining the hydraulic system’s efficiency and longevity.