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Seals · FOB India Export Price

CAT 320D Main Pump Seal Kit

USD 110–145
FOB India
Min: 1 set · Lead time: 3–5 days

CAT 320D Main Pump Seal Kit (CAT320D-MPK) — aftermarket quality, FOB India. Compatible with CAT 320D, CAT 320D2. Ex-Delhi warehouse, 3–5 days dispatch.

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Part: CAT320D-MPK Seals CAT 320
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About This Part

CAT 320D Main Pump Seal Kit — Export & Compatibility Guide

Pioneer Mitra supplies CAT 320 spare parts — including CAT 320D Main Pump Seal Kit and related components — from our New Delhi warehouse to dealers across the Middle East, Africa, and South Asia. Commonly ordered alongside CAT 320D Engine Overhaul Kit to reduce machine downtime by completing all hydraulic service work in a single shutdown. We export this part regularly to Saudi Arabia and UAE, with full customs documentation — commercial invoice, packing list, certificate of origin, and bill of lading — included with every shipment. Use our parts price search to find pricing for 95,000+ parts across JCB, Komatsu, CAT, and Volvo machines.

Part Number
CAT320D-MPK
Compatible With
CAT 320D, CAT 320D2, CAT 320GC
Application
Main hydraulic pump — prevents external oil loss, extends pump service life
FOB India Price
USD 110–145
Failure Guide

Warning Signs — When to Replace CAT 320D Main Pump Seal Kit

Service Intelligence

When to Replace CAT 320D Main Pump Seal Kit — Field Guide

When to Replace

Replace at first external leak — before internal bypass begins. Proactive replacement at 4,000 hours costs USD 110–145 and prevents a USD 1,800–2,400 pump replacement.

Why It Fails

Main pump shaft seals are the highest-stress sealing point in the hydraulic system — exposed to 350 bar pressure cycling thousands of times per shift. Heat and pressure eventually cause elastomer hardening.

If Ignored

If ignored: pump case drain oil mixes with hydraulic return oil, raising contamination levels system-wide. This accelerates control valve spool wear — a USD 2,000+ repair — and shortens all hydraulic cylinder seal life.

Field stat: A CAT 320D main pump leaking 100ml/hour loses 800ml per shift. System hydraulic oil volume is 200 litres — at this rate, full oil depletion occurs in 250 operating hours if the machine isn't monitored.

Export Markets

We Export CAT 320D Main Pump Seal Kit To

CountryPortSea FreightAir FreightImport Duty
Saudi ArabiaDammam9–12 days3–4 days5% + 15% VAT
UAEJebel Ali7–9 days24–48 hrs5% GCC
NigeriaLagos Apapa18–22 days4–5 daysForm M required
KenyaMombasa14–18 days3–4 daysIDF + Railway Levy + 0–25%

All shipments: Commercial Invoice · Packing List · COO · BL/AWB · MSME: UDYAM-DL-01-0041218

Common Questions

Frequently Asked Questions

CAT 320D main pump seal kit vs full pump replacement — when to choose?
Seal kit (USD 110–145) is sufficient when: external leak only, no pressure drop, no slow implements, Cat ET shows no pump fault. Full pump replacement (USD 1,800–2,400) needed when: pressure below 340 bar, both implements slow, case drain temperature elevated.
How long does CAT 320D pump seal replacement take?
Seal kit replacement takes 4–6 hours in a well-equipped workshop. The pump can be rebuilt in-situ without removing from the machine circuit on most 320D configurations.
Does this fit CAT 320GC?
Yes. CAT 320GC (2018+) shares the main hydraulic pump spec with 320D2. This seal kit fits both models.
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