Model: WP12 / WD618
Part Number: 612630010679
Brands: Weichai Power
Engine Model: WP12, WD12, WD618, WP12.430, WP12.460
Engine Type: Diesel
Scope of application: heavy trucks, mining dump trucks, construction machinery, marine and generator engines
Everything in an engine is positioned relative to the block. It holds the crankshaft in its main saddles, supports the liners, provides the deck that the head bolts onto and contains the coolant and oil galleries. Part 612630010679 is the bare block for the WP12 and WD618 family, the engine behind a large share of heavy trucks, mining equipment and marine auxiliary units in export markets.
A block is replaced rather than repaired when the main bores lose alignment, the deck falls below minimum height or the water jacket is cracked. Because the block defines the geometry of every other component, a worn foundation makes a rebuild impossible to get right, no matter how good the new parts are.
The block serves WP12 and WD12 road engines and the WD618 industrial and marine variants. Typical installations include HOWO and Shacman heavy tractors, 8x4 mining dump trucks, large excavators and wheel loaders, marine auxiliary engines and 250 to 400 kVA generator sets. Confirm the engine plate and the old block casting number: front cover patterns and engine mount positions changed over production years.
Blocks ship cleaned, with machined faces oiled and protected. If you want the block delivered with liners, cam bearings and gallery plugs fitted, say so when ordering and we will prepare it before crating.
A pressure test and a line bore check answer the question in most cases. If either fails, replacement is cheaper than a repair that will not last.
Use the correct thread sealant on gallery plugs. A missing plug means no oil pressure at start-up and destroyed bearings within seconds.
Match the casting number, the front cover bolt pattern and the engine mount holes. WP12 and WD618 blocks are close relatives but not identical across all years. Send a photo of the old block number and the engine plate and we will confirm before shipping.
Fleets rebuilding these engines regularly usually order the block together with liners and main bearings, which reduces both freight and assembly time.
Blocks are bolted to a timber base, with the deck covered and machined surfaces protected. The crate is banded and marked with lifting points so the block cannot move in a container. Because freight is charged on volume as well as weight, tell us if you are consolidating the block with other parts so we can plan the load.
Coolant quality prevents liner pitting, oil quality prevents bearing wear and healthy engine mounts prevent cracking. Replace a failed vibration damper promptly, since crank whip loads the main saddles, and keep the radiator clean in dusty operations.
WP12 and WD618 blocks share a family resemblance but differ in casting detail. The reliable identifiers are the casting number on the side of the block, the front cover bolt pattern and the engine mount positions. A block from a road engine may not accept a marine front cover without modification, and the reverse is equally true.
Send us photographs of the old block from three angles plus the engine plate, and our team will confirm the casting before the container is loaded. On export orders this check is far cheaper than returning a block that does not fit.
Blocks are bolted to a timber base, banded and marked with lifting points, with machined faces protected by a shield. Because freight is charged on volume as well as weight, tell us whether the block travels with other parts so we can load heavy items first. Common castings are normally available within three to five working days, with sea freight taking twenty-five to forty days depending on destination.
It is supplied bare by default. We can fit liners, cam bearings and gallery plugs on request.
Not reliably. Welding distorts bore alignment and the crack returns under load.
No. Bore spacing and deck height differ; they are not interchangeable.
Deck flatness, main bore alignment, liner bore roundness and the pressure test report. We can supply these measurements with the shipment.
Browse the Weichai cylinder block category, and complete the build with the WP12 cylinder head 612630040001 or the WP12 full gasket kit 612600900279.
We offer OEM quality and excellent after-sales service as a complementary option. Engine brands supported include Weichai, Baudouin, Yuchai, Caterpillar, FAW Xichai, Sinotruk, Cummins and other engine parts. Specifically engine overhaul kits, pistons, cylinder liners, crankshafts, camshafts, fuel pumps, water pumps, lube pumps, injectors, and other performance parts.
If you are not sure about the part number that you need, please provide all the information you have, such as the equipment nameplate, engine nameplate or engine number, or real photos.
Everything in an engine is positioned relative to the block. It holds the crankshaft in its main saddles, supports the liners, provides the deck that the head bolts onto and contains the coolant and oil galleries. Part 612630010679 is the bare block for the WP12 and WD618 family, the engine behind a large share of heavy trucks, mining equipment and marine auxiliary units in export markets.
A block is replaced rather than repaired when the main bores lose alignment, the deck falls below minimum height or the water jacket is cracked. Because the block defines the geometry of every other component, a worn foundation makes a rebuild impossible to get right, no matter how good the new parts are.
The block serves WP12 and WD12 road engines and the WD618 industrial and marine variants. Typical installations include HOWO and Shacman heavy tractors, 8x4 mining dump trucks, large excavators and wheel loaders, marine auxiliary engines and 250 to 400 kVA generator sets. Confirm the engine plate and the old block casting number: front cover patterns and engine mount positions changed over production years.
| We Are 30 Years Diesel Engine Parts Supplier | |
| Brand | EPID |
| Warranty | 12 Months |
| Condition | 100%New |
| More Models | Weichai: WP12, WD12, WD618, WP12.430, WP12.460, and other Weichai series. |
| Shipping | By sea / air / express (DHL, FEDEX, TNT, UPS, EMS) |
| Packing | Standard exporting packing or as required |
| Payment Term | L/C, T/T, Western Union, Trade Assurance |
| Delivery Time | 3-7 days (depend on order) |
| Selling Point | 1. On-time Delivery 2. Genuine Quality Assurance 3. Professional Supplier |
Blocks ship cleaned, with machined faces oiled and protected. If you want the block delivered with liners, cam bearings and gallery plugs fitted, say so when ordering and we will prepare it before crating.
A pressure test and a line bore check answer the question in most cases. If either fails, replacement is cheaper than a repair that will not last.
Use the correct thread sealant on gallery plugs. A missing plug means no oil pressure at start-up and destroyed bearings within seconds.
Match the casting number, the front cover bolt pattern and the engine mount holes. WP12 and WD618 blocks are close relatives but not identical across all years. Send a photo of the old block number and the engine plate and we will confirm before shipping.
Fleets rebuilding these engines regularly usually order the block together with liners and main bearings, which reduces both freight and assembly time.
Blocks are bolted to a timber base, with the deck covered and machined surfaces protected. The crate is banded and marked with lifting points so the block cannot move in a container. Because freight is charged on volume as well as weight, tell us if you are consolidating the block with other parts so we can plan the load.
Coolant quality prevents liner pitting, oil quality prevents bearing wear and healthy engine mounts prevent cracking. Replace a failed vibration damper promptly, since crank whip loads the main saddles, and keep the radiator clean in dusty operations.
WP12 and WD618 blocks share a family resemblance but differ in casting detail. The reliable identifiers are the casting number on the side of the block, the front cover bolt pattern and the engine mount positions. A block from a road engine may not accept a marine front cover without modification, and the reverse is equally true.
Send us photographs of the old block from three angles plus the engine plate, and our team will confirm the casting before the container is loaded. On export orders this check is far cheaper than returning a block that does not fit.
Blocks are bolted to a timber base, banded and marked with lifting points, with machined faces protected by a shield. Because freight is charged on volume as well as weight, tell us whether the block travels with other parts so we can load heavy items first. Common castings are normally available within three to five working days, with sea freight taking twenty-five to forty days depending on destination.
Browse the Weichai cylinder block category, and complete the build with the WP12 cylinder head 612630040001 or the WP12 full gasket kit 612600900279.
It is supplied bare by default. We can fit liners, cam bearings and gallery plugs on request.
Not reliably. Welding distorts bore alignment and the crack returns under load.
No. Bore spacing and deck height differ; they are not interchangeable.
Deck flatness, main bore alignment, liner bore roundness and the pressure test report. We can supply these measurements with the shipment.
EPID supplies diesel engine parts for Weichai, Baudouin, Yuchai, Caterpillar, Sinotruk, FAW Xichai and Cummins engines. Every order is checked against the original part number before packing, and our team can identify a part from a photo of the engine plate. Ask for a quotation with your model and quantity and we will reply within one working day.
