COGENG New 707-99-37150 Bucket Cylinder Seal Kit Fits For Komatsu PC160LC-7
Komatsu Seal Kit 707-99-37150 (7079937150) – Perfect Fit for PC160LC-7, PC180LC-7K – 75mm/110mm
Introduction
If you own or service Komatsu excavators, you know that hydraulic system reliability depends heavily on the quality of seals. One failed seal can lead to oil leaks, contamination, cylinder drift, and expensive downtime.
Today we’re introducing a high-quality aftermarket replacement – the COGENG Komatsu Seal Kit with part number 707-99-37150 (also written as 7079937150). This seal kit is specifically designed for Komatsu PC160LC-7, PC180LC-7K, and PC160LC-7K-KA models, with precise 75mm / 110mm sizing.
In this detailed blog post, we’ll cover compatibility, material specifications, packaging, payment and shipping options, certification, and why this seal kit is a smart choice for your heavy equipment.
Why Quality Seals Matter in Komatsu Excavators
Hydraulic cylinders are the muscles of your excavator. Seals keep high-pressure oil inside the cylinder while keeping dirt, water, and air out. When seals fail:
Hydraulic oil leaks externally or internally
Cylinder speed becomes erratic
Bucket or arm drift occurs
Oil contamination damages pumps and valves
Fuel consumption increases due to efficiency loss
Using a low-quality seal kit may save money upfront but costs far more in component repairs later. That’s why the COGENG seal kit, built to match OEM standards, is the right balance of durability and value.
Product Overview: COGENG Komatsu Seal Kit 707-99-37150
Part Number Details
Main part number: 707-99-37150
Alternate writing: 7079937150 (no dash)
Always cross-reference with your original part number before ordering. This seal kit is a direct replacement for the Komatsu OEM version.
Size / Dimensions
Size: 75mm / 110mm
These dimensions typically refer to the piston rod diameter and cylinder bore diameter. Always verify your cylinder measurements before purchasing.
Model Compatibility
This seal kit fits the following Komatsu excavator models:
Komatsu PC160LC-7
Komatsu PC180LC-7K
Komatsu PC160LC-7K-KA
If your machine is one of these models, this seal kit is almost certainly the correct one for specific cylinders (such as boom, arm, or bucket cylinders). For other models, check your original part number.
Material: Iron + Rubber – Built for Heavy Duty
Material composition: Iron + Rubber
Rubber seals (NBR, polyurethane, or FKM depending on application) provide flexible, oil-resistant sealing.
Iron components (such as backup rings, wear rings, or metal guide rings) add structural strength under high pressure.
This combination ensures:
Excellent sealing under high hydraulic pressure (up to 350 bar or more)
Resistance to oil, grease, and hydraulic fluids
Low friction to prevent cylinder scoring
Long service life in tough environments (dust, mud, temperature changes)
Unlike cheap poly-only kits, the iron-rubber design prevents extrusion of seals into gaps under extreme pressure.
Certification – ISO9001 Guarantees Quality
Certification: ISO9001
COGENG holds ISO9001 certification, which means:
Strict quality control during production
Consistent material sourcing
Traceability of each batch
Regular third-party audits
When you see ISO9001 on a seal kit, you can trust that the critical dimensions – like inner diameter, outer diameter, cross-section – are accurate to within tolerances. This is essential for leak-free cylinder reassembly.
Packaging – Safe for Storage and Transport
Packing: PP bag inside, carton box outside
Inner PP bag protects seals from dust, moisture, and static.
Outer carton box prevents crushing and deformation during shipping.
Proper packaging also helps you store unused seal kits for months without degradation. Keep them in a cool, dry place away from direct sunlight.
Supply Quantity & MOQ
Supply capacity: 500 PCS (readily available)
MOQ: Acceptable trial order
You don’t need to buy a bulk container just to test quality. COGENG welcomes small trial orders – even 1 or 2 kits. This is ideal for:
Independent repair shops
Small fleet owners
Mechanics testing a new supplier
Parts distributors wanting to verify fitment
Payment Terms – Flexible for International Buyers
To make global purchasing easy, COGENG accepts multiple payment methods:
Western Union – fast for small amounts
L/C (Letter of Credit) – secure for large orders
T/T (Telegraphic Transfer) – most common and reliable
MoneyGram – convenient for smaller transactions
D/A (Documents against Acceptance)
D/P (Documents against Payment)
Always confirm final payment terms and currency with your sales representative before placing an order.
Shipping Options – Fast Delivery Worldwide
Choose the shipping method that fits your timeline and budget:
By air – good balance of speed and cost for medium orders
By sea – most economical for large volumes (containers)
By express courier – FedEx, UPS, DHL, TNT – door to door in 3–7 business days
For trial orders, express shipping is highly recommended. You get real-time tracking, faster customs clearance, and less risk of damage.
Place of Origin – Guangdong, China
Place of Origin: Guangdong, China
Guangdong is a global hub for hydraulic seal manufacturing. The region has mature rubber compounding, metal machining, and quality testing infrastructure. Sourcing from Guangdong means competitive pricing without compromising on material standards.
How to Identify the Correct Seal Kit for Your Komatsu
Follow these steps to avoid ordering the wrong seal kit:
Locate your cylinder – boom, arm, or bucket.
Measure rod diameter – should be approximately 75mm.
Measure bore diameter – should be approximately 110mm.
Check machine model – PC160LC-7 or PC180LC-7K.
Find original part number – look for 707-99-37150 on the old seal kit or parts manual.
If your measurements match 75mm / 110mm and your machine is one of the listed models, this seal kit is correct.
Why Choose COGENG Brand for Komatsu Seal Kits?
COGENG is a trusted aftermarket brand for construction equipment parts. Their seal kits are widely used in Asia, Africa, the Middle East, and South America. Key advantages:
Factory-direct pricing – no unnecessary markups
In-stock availability – most items ship within 48 hours
Technical support – help with identification and installation
12-month warranty against manufacturing defects
Compared to genuine Komatsu seal kits, COGENG typically saves customers 40–60% while maintaining reliable performance.
Signs Your Komatsu Cylinder Seals Are Failing
Watch for these symptoms – if you see any, it’s time to replace the seal kit:
Visible oil leaks around the cylinder rod
Slow or jerky cylinder movement
Bucket or arm drops when engine is off
Hydraulic oil turns milky or dark – contamination past seals
Knocking sounds during cylinder operation
Low hydraulic tank level without external puddles (internal leakage)
Replacing seals early can prevent scoring of the cylinder bore or rod, which costs much more to repair.
Installation Tips for Seal Kit 707-99-37150
Disclaimer: Always consult your Komatsu service manual. The following is general guidance.
Remove cylinder from machine safely using proper lifting equipment.
Drain hydraulic oil into clean containers.
Disassemble cylinder using a spanner wrench or cylinder bench.
Clean all metal parts thoroughly – any grit will ruin new seals.
Inspect rod and bore for scratches or pitting. Polish or replace if damaged.
Lubricate new seals with clean hydraulic oil before installation.
Install seals carefully – avoid twisting or cutting on sharp edges.
Reassemble cylinder and torque to specification.
Test cylinder at low pressure before full operation.
A properly installed seal kit should last 2,000–5,000 operating hours depending on conditions.
Frequently Asked Questions
Q1: Is this seal kit genuine Komatsu?
No, it is a high-quality aftermarket replacement by COGENG, built to match OEM specifications.
Q2: What does the 75mm/110mm size refer to?
Typically 75mm is the rod diameter, and 110mm is the cylinder bore diameter. Always measure your own cylinder to confirm.
Q3: Will this fit Komatsu PC200LC-7?
No, this seal kit is specifically for PC160LC-7, PC180LC-7K, and PC160LC-7K-KA. PC200 uses different dimensions.
Q4: Can I order just one seal kit?
Yes, trial orders are accepted. MOQ is flexible.
Q5: How long does DHL shipping take?
Usually 5–7 business days to most countries in Asia, Europe, North America, and the Middle East.
Q6: Do you provide installation instructions?
A general diagram is available. For detailed instructions, refer to the Komatsu workshop manual for your machine.
Conclusion – Reliable Sealing for Your Komatsu Excavator
The Komatsu Seal Kit 707-99-37150 (7079937150) by COGENG is a durable, cost-effective solution for PC160LC-7, PC180LC-7K, and PC160LC-7K-KA excavators. With 75mm/110mm sizing, iron + rubber construction, ISO9001 certification, and flexible payment & shipping options, it’s the smart choice for workshop owners, fleet managers, and parts distributors.
Don’t let leaking cylinders drain your profits. Order a trial seal kit today and experience reliable hydraulic performance.
Call to Action:
๐ง Ready to order your Komatsu seal kit 707-99-37150? Contact COGENG now for a quick quote.
✅ Mention part number 707-99-37150 or model PC160LC-7 for fastest response.
๐ Worldwide shipping via DHL, FedEx, UPS, or sea freight – get your kit in days.
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