Reliable engine sealing starts with a precision-fit 6136-21-7120 (also known as 6136217120). This Oil Filler Cap is engineered specifically for the Komatsu S6D105 engine series, ensuring a leak-proof seal that prevents oil contamination and pressure loss.
Whether you are performing a routine oil change or a complete engine overhaul, using an OEM-standard replacement is critical for equipment longevity.
| Attribute | Details |
|---|---|
| Part Number | 6136-21-7120 / 6136217120 |
| Model NO. | Komatsu S6D105 / SA6D105 / S6D105-1 |
| Product Name | Oil Filler Cap / Engine Oil Cap |
| Condition | Brand New, OEM Standard Replacement |
| Stock Status | In Stock / Fast Dispatch |
| Payment Terms | T/T, Western Union, MoneyGram |
| Delivery Methods | Express: DHL, Fedex, EMS, UPS / Air / Sea |
| Application | Engine rebuild, overhaul, maintenance |
| Key Features | Standard Aftermarket | Our OEM Replacement |
|---|---|---|
| 1. Sealing Integrity | Average rubber seal | High-temp resistant Viton/NBR seal |
| 2. Thread Precision | Loose fitment | 1:1 Exact OEM thread match |
| 3. Material Durability | Thin plastic/metal | Heavy-duty industrial grade alloy/polymer |
| 4. Pressure Resistance | Prone to leaks | Maintains crankcase pressure balance |
| 5. Delivery Speed | 2-4 weeks | Global dispatch within 48 hours |
| 6. Reliability | Unknown source | Trusted by repair shops & equipment fleets |
Q1: Why is oil leaking from around my 6136-21-7120 cap?
A: This is usually caused by a hardened or cracked gasket. Constant heat cycles degrade the seal. Replacing the cap with a fresh 6136217120 ensures the crankcase remains pressurized and free from dust.
Q2: Will this fit other Komatsu models?
A: While primarily for the S6D105 engine, it may fit related 105 series variations. Always verify your engine serial number before purchasing.
Why Choose This Oil Filler Cap?
Answer: Our 6136-21-7120 features an OEM-standard structure designed for harsh construction environments. It is trusted by repair shops and large equipment fleets worldwide for its reliable performance.
Not sure how this issue affects your equipment?
Our team helps operators: Identify potential risks during maintenance, Recommend suitable replacement parts if needed, and Support both inspection advice and parts supply.
We specialize in heavy-duty engine parts for Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai. Our inventory includes: Cylinder Liners, Pistons, Piston Rings, Main Bearings, Con Rod Bearings, Thrust Washers, Full Gasket Kits, Fuel Injection Pumps, Injectors, Crankshafts, Turbochargers, Water Pumps, Oil Pumps, Cylinder Blocks, Cylinder Heads, and Connecting Rods.
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