Looking for a reliable 7N3049 (also identified as 7N-3049) engine seal? As a specialized heavy-duty parts supplier, we provide OEM-standard sealing solutions specifically designed for Caterpillar diesel engines. Whether you are performing a routine maintenance check or a complete engine overhaul, our high-performance seals ensure zero-leakage operation under extreme pressure.
The 7N3049 seal is a critical component for maintaining oil pressure and preventing contamination within the engine block. Below are the verified technical details for this part number.
| Attribute | Details |
|---|---|
| Part Number | 7N3049 / 7N-3049 |
| Model NO. | Caterpillar 3304, 3306, 3306B, 3406, 3406B, D6R, D7R, 966F |
| Product Name | Crankshaft Rear Seal / Oil Seal |
| Condition | Brand New, OEM Standard Replacement |
| Application | Engine rebuild, overhaul, maintenance |
| MOQ | 1 Piece |
| Stock Status | In Stock / Fast Dispatch |
| Delivery Methods | DHL, Fedex, EMS, UPS, Air/Sea Freight |
| Payment Terms | T/T, Western Union, MoneyGram |
Comparing our parts to standard aftermarket alternatives reveals significant differences in durability and fitment accuracy.
| Core Features | Our OEM-Standard Seal | Common Aftermarket Parts |
|---|---|---|
| Material Composition | High-grade Viton/PTFE for heat resistance | Standard rubber (prone to hardening) |
| Fitment Precision | Exact 7N3049 / 7N-3049 dimensions | Approximate sizing (causes micro-leaks) |
| Heat Tolerance | Up to 250 Degrees Celsius | Fails at 150 Degrees Celsius |
| Service Life | 8,000+ Running Hours | Less than 3,000 Running Hours |
| Sealing Lip Tech | Hydrodynamic rib design | Simple flat edge |
| Cost Efficiency | Higher ROI through reduced downtime | Frequent replacements required |
Not sure how this issue affects your equipment? Our team helps operators troubleshoot effectively.
Identify potential risks: Check for oil spotting near the rear engine housing which indicates a failing 7N3049 seal.
Recommend suitable parts: We verify your engine serial number to ensure the seal matches your specific 3306 or 3406 configuration.
Support and Advice: We provide guidance on installation tools to prevent damage to the seal lip during assembly.
A: Rear oil leaks are commonly caused by a worn 7N3049 crankshaft seal. Over time, heat and friction degrade the sealing surface. Replacing it with an OEM-standard seal restores the vacuum and prevents engine oil loss.
A: Yes, the 7N3049 is a versatile part number compatible with several Caterpillar series including the 3406 and 3406B. Always check for the 7N-3049 designation in your parts manual.
A: Because it features an OEM-standard tri-metal structure and is trusted by repair shops and equipment fleets globally for its long-term reliability in harsh environments.
Need pricing for 7N3049 or other engine components? Fill out the form below for an immediate response from our parts specialists.
Our company is a leading provider of comprehensive engine solutions. We specialize in engine assemblies and high-precision components for world-class brands including Cummins, Komatsu, Caterpillar, Isuzu, Kubota, Yanmar, and Weichai.
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