Product Details
Assembly 612630090022 functions as a fully self-contained P-type unit injector engineered for Weichai WP12 (12.0 L) and WP13 (12.8 L) inline-six diesels operating in long-haul tractor, dump, and fixed-power duties. It integrates the needle valve, bias spring, pressure-intensifying plunger, and spray tip into one nitrided alloy-steel cartridge that seats into the cylinder head cup via a 24 mm-class flange and copper compression washer. Rated for mechanical pump drive (pre-CRS WD12/WP12 architecture), it delivers a 150°-class hollow-cone plume through a 5-hole DLLA151P2479-type tip at a mechanical crack pressure of ~220–235 bar depending on shim code. The 17 mm spanner hex, M14-class nozzle nut interface, and 60° needle seat are dimensionally congruent with the Weichai P-type holder family, allowing in-field rebuild with a fresh tip + spring kit. Cross-reference aliases: 612630090022, WP12 injector, occasionally listed as Bosch DLLA151P2479 equivalent in aftermarket channels.
Video Description
Product Parameters
|
Part number |
612630090022 |
|
Project |
Fuel Injector |
|
Material |
45# steel |
|
Type |
Oil pump, oil nozzle |
|
Status |
New |
|
Compatible models |
Isuzu 4HK1 5.2L 6HK1 7.8L Engine |
|
Price |
7-12 USD |
|
Shape |
Standard fuel injector shape |
|
Working temperature |
Suitable for normal working temperature of diesel engine |
|
Delivery time |
3-10 working days (delivery time varies depending on quantity and season) |
|
MOQ |
4 |
|
OEM |
Acceptable (customized labels, tags, logos) |
|
Sample |
Available (sent for inspection first) |
|
Production capacity |
150000 pieces/year |
Our Advantages
Optimized internal flow geometries facilitate instantaneous fuel pressure feedback, generating steady torque output across an extensive operating spectrum and curbing fuel consumption at idle and constant cruising speeds. Every assembly receives separate dynamic assessment on specialized test rigs to validate opening pressure, sealing reliability and spray performance, securing homogeneous functional characteristics with zero batch inconsistency. Manufactured as a direct OEM equivalent adhering to original installation dimensions, the component requires no on-site modification during maintenance and substantially minimizes equipment downtime. Its sturdy build allows prolonged operation aboard heavy-duty cargo vehicles and stationary diesel power facilities. Ample stock reserves are kept on hand to fulfil initial sample requests and large-scale export orders, alongside customized logistics schemes and continuous technical support provided via authorized regional sales branches.
FAQ
1.Is 612630090022 the nozzle tip or the full injector?
Full unit injector-tip, needle, spring, and plunger in one body. Buying this number gets you the screw-in cartridge for the head; you do not separately purchase a DLLA tip or a KDAL-style holder. Treating it like a Bosch 0 432 131 xxx P-tip (the 131-series parts earlier in this thread) is the classic misorder-different engine family, different interface.
2.Will a 612630090022 from a WP12 drop into a WD615/WP10 head without changes?
No. WD615/WP10 (10 L class) uses a shorter injector cup and different flange thickness; the WP12/WP13 612630090022 is ~6 mm longer in the shank and carries a higher crack-pressure shim stack. Forcing it into a WD615 cup leaves the tip proud of the pre-chamber plane → spray impinges on the lip. Match by engine code (WP12/WP13 only), not by "Weichai P-type" label.
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