Product Details
Assembly 212-8470 functions as a fully self-contained unit injector (not a bare tip, not a holder-only body) engineered for Caterpillar 3066 and 3064 inline-six diesel platforms in mid-tonnage hydraulic excavators. It integrates the needle valve, nozzle tip, spring stack, and pressure-intensifying plunger into one screw-in cartridge that seats into the cylinder head cup via a 24 mm class flange and CAT-spec copper washer. Rated for mechanical pump drive (pre-common-rail 3066), it delivers a 150° class hollow-cone spray through a 5–6 hole DLLA-type tip at ~200–220 bar mechanical crack pressure depending on shim code. Constructed from nitrided carbon-alloy steel with a lapped 60° needle seat, the unit sustains invariant plume symmetry across 1,800–2,400 rpm load sweeps and coolant-ambient swings from −25 °C to +110 °C. Cross-reference aliases: 2128470, CA2128470, occasionally superseded by 233-1161 / 2331161 in later CAT revision books.
Video Description
Product Parameters
| Part Number | 212-8470 |
| Items |
Fuel Injector |
| Type |
Oil pump, oil nozzle |
| Condition | New |
| Material | 45# steel |
| Compatible Models | Caterpillar CAT 311C 312C 314C 318C 320C 320D 321C Excavator 3066 3064 Engine |
| Price | $9.5-$10 |
| Shape | Standard injector shape |
| Working Temp | Adapt to diesel engine normal working temperature |
| Lead Time | 3-10 working days (According to quantity and seasons, the lead time is different) |
| MOQ | 4 PC |
| OEM | Acceptable (customized tag, label, logo) |
| Sample | Available (sent first for quality inspection) |
Our Advantages
Cast from superior thermally durable alloy blends, this exacting fuel metering unit ensures steady fluid movement and uniform particle dispersion amidst dynamic pressure variations and sustained heat-induced wear. Every finished piece participates in comprehensive performance benchmarking to enhance fuel economy, address cold-start firing irregularities, and contain carbon residue on internal cylinder surfaces. Fine-tuned internal flow channels amplify peak torque capabilities, reduce per-cycle fuel draw, and decrease harmful emission levels. Constructed for rapid mounting without tools and straightforward field upkeep, its rugged exterior enclosure accommodates freight fleets, digging plant, and stationary generator installations. Scheduled group-based quality checks preserve consistent performance standards for every export consignment, with bespoke sourcing assistance furnished through formally accredited local supply channels.
FAQ
1.Is 212-8470 just the spray tip, or the whole injector?
It is the whole unit injector (GP-Unit Injector) - tip, needle, spring, and plunger in one body. Buying "212-8470" gets you the screw-in cartridge that drops into the head; you do NOT separately buy a DLLA tip or a KDAL-style holder. Confusing it with a Bosch 0 432 131 xxx tip (like the 131-series parts earlier in this thread) is the most common misorder.
2.Will a 212-8470 from a 320D fit a 320C without changes?
Mechanically yes - both 320C and 320D 3066 heads share the injector cup and flange; the 212-8470 is the common PN across both. But 320D later S/N ranges sometimes rolled to revised calibration codes (e.g., 233-1161 supersession). If your engine plate lists 233-1161, fit 212-8470 only after confirming the shim/pop code - same threads, possibly different crack pressure. Bench-check pop before fleet-wide swap.
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