Product Specifications
| Parameter | Details |
|---|
| Part Name | Fuel Filter, Fuel Pump & Air Filter Kit |
| Part Number (OEM Reference) | Fuel Filter: 149-2457 / 1492457
Fuel Pump: 149-2311 / E11006 / E11007 / 1492311
Air Filter: 140-3280 / 1403280 |
| Brand Compatibility | Onan (Cummins), MicroQuiet, MicroLite, Camp Power, QG RV |
| Machine Model Fitment | KY 3600 Series, KY 4000 Series, Camp Power KYD, Microlite RV QG, Camp Power/QG RV |
| Condition | New Aftermarket |
| Warranty | 6-month warranty against manufacturing defects |
| Packaging | Individual blister-packed components in branded retail box |
Compatible Models
| Brand | Applicable Models |
|---|
| Onan (Cummins) | KY 3600 Series, KY 4000 Series |
| MicroQuiet | KY 3600, KY 4000 |
| MicroLite | KY, RV QG |
| Camp Power | KYD, Camp Power/QG RV |
Tired of Unexpected Generator Shutdowns? Get the Right Onan KY 4000 Generator Replacement Filters and Fuel Pump
RV and mobile power operators know how costly downtime is — a single failed fuel pump or clogged air filter can stall an entire campsite’s power supply during peak season. Many buyers have received counterfeit 149-2457 fuel filters that collapse under pressure, or mismatched 149-2311 fuel pumps with incorrect flow rates causing erratic voltage output. OEM lead times for Onan MicroQuiet KY 4000 generator replacement filters often stretch to 3 weeks, delaying critical maintenance.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
We supply 149-2457 fuel filters, 149-2311 fuel pumps, and 140-3280 air filters built to match original Onan specifications — manufactured in ISO 9001-certified factories and tested before shipment. As a professional engineering parts supplier with 10 years’ global export experience, we maintain over 10,000 SKUs in our Guangzhou warehouse, including this complete Onan KY 4000 generator fuel and air filter kit. All units are verified for fit, flow rate, filtration efficiency, and mounting compatibility prior to dispatch — ensuring reliable operation in RV auxiliary power systems.
Where This Part Works
This filter and pump kit serves mobile and off-grid applications where consistent power delivery is non-negotiable: recreational vehicle (RV) electrical systems, remote job site lighting and tools, marine auxiliary generators, and emergency backup setups at small businesses. In dusty, high-vibration environments like desert camping or construction trailers, the 140-3280 air filter prevents intake contamination, while the 149-2311 fuel pump maintains stable 12V DC pressure across varying load conditions — directly supporting uninterrupted operation of refrigerators, AC units, and communication gear.
Engineering Details That Matter
The 149-2457 fuel filter uses multi-layer cellulose-synthetic media rated for 10-micron nominal filtration, meeting SAE J1838 standards for diesel/gasoline blends used in Onan KY series. Its aluminum housing resists thermal cycling fatigue better than plastic alternatives. The 149-2311 fuel pump features a precision-machined brass impeller and dual-seal design to prevent vapor lock and ensure 3.5–4.2 PSI output across ambient temperatures from -20°C to +60°C. The 140-3280 air filter employs oiled cotton gauze media with reinforced pleat geometry, delivering 99.2% efficiency at 15 microns while maintaining low restriction (<2.5 kPa at 200 L/min). All dimensions match OEM tolerances within ±0.15 mm for direct bolt-on installation without adapters or modifications.
The Real Cost of Wrong Parts
A $12 counterfeit fuel filter may seem economical — until it disintegrates and blocks the injector rail, requiring full fuel system flush and labor costing $320+. A mismatched 149-2311 pump with insufficient pressure causes low-output voltage, damaging connected electronics and triggering warranty denials. Industry data shows substandard Onan generator filters reduce average service life by 60% versus OEM-equivalent parts. When factoring labor, downtime, and secondary damage, total cost of ownership (TCO) for low-grade filters exceeds premium aftermarket kits by 2.3× over 12 months. Our Onan MicroQuiet KY 4000 fuel and air filter kit delivers ISO-certified reliability at 40% below OEM list price — with no compromise on performance or safety.
Why Customers Trust XUNPO
• We partner exclusively with ISO 9001-certified factories — all incoming materials undergo batch-level dimensional and material verification.
• Every 149-2311 fuel pump is flow-tested at 12V/3.8 PSI; every 149-2457 fuel filter passes differential pressure validation at rated flow.
• 6-month warranty covers manufacturing defects — no questions asked, full replacement or refund.
• 10 years of documented export history to 120+ countries, including repeat orders from RV fleet operators in North America and Europe.
• 20+ technical staff with heavy equipment OEM backgrounds verify part compatibility — your inquiry receives expert response within 2 hours.
• 10,000+ SKUs held in stock in Guangzhou — this Onan KY 4000 generator replacement filters kit ships in 2–5 working days.
Packaging & Shipping
- Each component sealed in individual anti-static blister pack; assembled in rigid retail box with protective foam inserts
- In-stock items ship within 2–5 working days after order confirmation
- Flexible logistics: Express (DHL/FedEx/UPS), air freight, or sea freight — selected per customer requirement
- Real-time tracking number provided upon dispatch, updated until final delivery
- MOQ: 1 set — supports urgent field repairs and sample validation
Get Your Onan KY 4000 Generator Replacement Filters Now
Your generator isn’t generating revenue while it’s offline — every hour of delay costs time, trust, and income. Send us your part numbers (149-2457, 149-2311, 140-3280), machine model (e.g., MicroQuiet KY 4000), and quantity — we’ll issue a competitive quote within 24 hours. First-time customers may request a sample set for functional testing before bulk ordering.
Frequently Asked Questions
Q: Is this an original Onan (Cummins) part or an aftermarket replacement?
A: These are OEM-equivalent aftermarket parts manufactured in ISO 9001-certified facilities to meet Onan performance and dimensional specifications — not sourced from Cummins or Onan.
Q: How do I confirm if these parts fit my specific KY 4000 unit?
A: Provide your exact model (e.g., KY 4000E, KY 4000M) and serial prefix — our technical team verifies compatibility and responds within 2 hours.
Q: What is the warranty period for these filters and pump?
A: 6-month warranty covering manufacturing defects — replacement or refund issued promptly upon verification.
Q: What is the minimum order quantity?
A: 1 set (1×149-2311 fuel pump, 1×149-2457 fuel filter, 1×140-3280 air filter) — no bulk requirement.
Q: How long does shipping take?
A: In-stock orders ship from Guangzhou within 2–5 working days. Express delivery reaches most destinations in 3–7 business days.
Q: Can I receive a sample before placing a larger order?
A: Yes — first-time customers may request one sample set for functional evaluation; standard shipping fees apply.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com
