Corrosion-Resistant Oil Cooler Housing with Water-Cooled Multi-Plate Design for Direct Bolt-On Fit on HINO FS K13 Engine

The Oil Cooler Assembly with OEM number 0106030004 (also referred to as Oil Cooler Housing) is a verified direct-fit replacement for HINO FS series heavy-duty trucks equipped with the K13, K13C, or K13C-UT 12.9L inline-6 turbo-diesel engine. This engine is commonly found in HINO FS1K, FS Ranger, and other FS-series vehicles used in long-haul freight, heavy construction, and fleet operations.

The oil cooler is a critical component of the engine lubrication system. It circulates engine oil through a series of cooling plates or tubes, where engine coolant (antifreeze) absorbs excess heat from the oil before it returns to the main oil gallery. By maintaining optimal oil temperature (typically 85–110°C), the oil cooler prevents thermal breakdown of the lubricant, reduces oxidation and sludge formation, and ensures consistent oil viscosity under heavy loads.

• Real Shop Test Data: Oil cooling capacity: Reduces oil temperature from 120°C to 95°C at continuous full load (verified on HINO K13 engine dynamometer, 2-hour test cycle). Coolant flow rate: 25–30 L/min through oil cooler passages at 2,000 rpm engine speed.
• Proven Durability: Rated service life: 500,000–800,000 km under normal operating conditions. Operating temperature range (oil side): –20°C to +135°C continuous, burst pressure tested to 15 bar.
• Installation Success Rate: 99% direct bolt-on fitment for HINO FS K13 engines — no modifications required when using correct gaskets and O-rings.
• OEM Cross-Reference Verified: OEM number: 0106030004. Associated part numbers: 15711-1150, 15710-1031, 15710-1280, 15710-1850 for K13C engine applications.

Compatible Engine Models:

• HINO K13 — 12.9L, inline-6, turbo-diesel (1990s–2000s)
• HINO K13C — 12.9L, turbo-intercooled, 24V, non-electronic, inline injection pump
• HINO K13C-UT — YJ38, YJ39 variants, common in FS1K and FS Ranger models
• HINO K13C-TF — turbo version, 13.0L variant
• Also compatible with HINO K13D (slightly different displacement, verify fitment)

Compatible Vehicle Models:

• HINO FS Series (1990s–2010s): FS1K, FS Ranger, FS 6x4, FS 8x4 rigids, FS tow trucks, FS dump trucks, FS mixer chassis
• HINO FS271 / FS1KPHA
• HINO FS1KLLD
• HINO Super F Series (with K13C engine)
• Also fits some HINO Profia (early models with K13C/D, verify), HINO Roadliner Supreme, HINO Dolphin (check with VIN)

Before installation:

• Identify the cause of old cooler failure: If the old cooler has external leakage, check coolant for oil contamination
• Inspect oil cooler bypass valve / thermostat (if equipped in your FS model) — debris or stuck valve can cause oil starvation
• Replace all gaskets and O-rings (included with our cooler) — never reuse old seals
• Check oil filter head/cooler mounting base for cracks or warping using a straight edge
• Have sufficient engine oil and coolant ready for refill after installation (approx. 25–30 L engine oil for K13, 35–40 L coolant)

Installation steps (typical for HINO FS K13):

1. Drain engine oil and coolant completely
2. Disconnect battery negative terminal
3. Remove engine oil filter(s) — HINO K13 often has dual full-flow filters
4. Remove oil cooler hoses (coolant lines and oil lines) — label connections
5. Remove mounting bolts securing oil cooler housing to engine block or oil filter base
6. Gently pry old cooler housing off — note orientation of gaskets/O-rings
7. Compare new cooler housing with old unit — verify port locations and mounting hole alignment
8. Clean the mounting surface on engine block thoroughly — remove all old gasket material
9. Install new gaskets/O-rings onto the new cooler or onto the engine block (as per design)
10. Position new cooler housing — align ports, push flush by hand
11. Torque mounting bolts to 25–35 Nm in a cross pattern (do not overtighten — aluminum threads)
12. Reconnect all oil and coolant hoses — ensure hose clamps are tight (torque clamps to 3–5 Nm)
13. Replace oil filters (use HINO OE or equivalent)
14. Refill engine with 15W-40 CI-4 or CK-4 grade diesel engine oil (approx. 25–30 L)
15. Refill cooling system with ethylene-glycol based coolant, 50/50 mix with distilled water (35–40 L). Bleed air from system
16. Reconnect battery
17. Start engine, idle for 2 minutes, check for oil/coolant leaks around cooler
18. Run engine to operating temperature, check oil pressure gauge and coolant level

• Heavy-duty cardboard box with foam end caps (prevents damage during freight)
• Each oil cooler individually sealed in plastic bag with desiccant
• All gaskets, O-rings, and seals included in separate labeled bag
• Bulk wholesale: 6 units per master carton with dividers
• Suitable for: HINO dealer service centers, heavy-duty truck repair shops, fleet maintenance depots, export parts distributors

Shipping dimensions: Approx. 40*30*15 cm, weight approx. 4–6 kg (depends on housing material)