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612630040005 HEAD COVER ASSY WP12 WEICHAI ENGINE
612630040005 HEAD COVER ASSY WP12 WEICHAI ENGINE

612630040005 HEAD COVER ASSY WP12 WEICHAI ENGINE

612630040005 HEAD COVER ASSY WP12 WEICHAI ENGINE

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Product Detail

Cylinder Head Cover Assembly for Weichai WP12 Engine – Part No. 612630040005

The Cylinder Head Cover Assembly (Part No. 612630040005, also known as a Valve Cover or Rocker Arm Cover) is a precision-engineered engine component manufactured by Weichai Power Co., Ltd. (潍柴动力), a globally prominent diesel engine manufacturer based in Weifang, Shandong Province, China. Founded in 1946, Weichai Power has grown into one of the world's leading powertrain manufacturers, serving markets across heavy-duty commercial vehicles, construction machinery, marine propulsion, generator sets, and agricultural equipment.

omponent DescriptionPart NumberSource / Reference
Cylinder Head Cover (Valve Cover) – Main Item612630040005
Cylinder Head Cover Gasket612630040007
Cylinder Head Cover Gasket (Alternative)610800040229
Cylinder Head Cover Gasket (Alternative)612650040043
Cylinder Head Cover Gasket (4‑valve variant)612650040011
Cylinder Head Cover Gasket (Heavy‑duty)614040021
Cylinder Head Cover Gasket (Alternative)614040021-1
Cylinder Head Cover Gasket (Alternative)612630040066
Cylinder Head Cover Assembly (Complete)1001167541
Cylinder Head Cover (Alternative)612600040149 (WD615/WP10)
Cylinder Head Cover (Alternative)614040065
Cylinder Head Cover (Alternative)1101111-00258-001
Oil Filler Cover Assembly1004020407
Oil Filler Cap1004020402

Valve Train Components (Internal to Cylinder Head Cover)

Component DescriptionPart NumberSource
Valve, Intake612630050146
Valve, Exhaust612630050002
Valve Spring612630050005
Valve Spring Top Retainer612630050014
Valve Collet / Lock612630050015
Valve Oil Seal612600040114
Valve Seat, Intake612630040075
Valve Seat, Exhaust612630040076
Valve Guide, Intake612630040181
Push Rod1001454037
Valve Bridge1001243202
Tappet (Valve Lifter)612630050100
Rocker Arm Assembly1000495390
Rocker Arm Set1000881645
Rocker Arm Bracket Assembly612630050013
Rocker Arm Shaft612630050030
Rocker Arm Shaft Set612630050018
Adjusting Bolt (Valve Lash)612630050011
Adjusting Nut612630050012
EVB Valve Bridge Assembly1000495068
EVB Bracket Assembly1014936608

Cylinder Head & Gasket Components

Component DescriptionPart NumberSource
Cylinder Head Gasket (WP12)612630040006
Cylinder Head Gasket1005000997
Cylinder Head Assembly1007877682
Cylinder Head Subassembly1014857474
Injector Bush612630040026
Injector Bush Sealing Ring1004257065
Bowl Plug612600040639, 612600040634, 612600040633
Cylinder LinerOEM-specific (consult Weichai parts catalog)—
Cylinder Head BoltOEM-specific (consult Weichai parts catalog)—

Camshaft & Timing Components

Component DescriptionPart NumberSource
Camshaft Assembly1001155303 / 1001155304
Camshaft Timing Gear612630030003
Camshaft Thrust Plate612630030002
Idler Gear Assembly612630030150
Idler Gear Shaft612630030151
Small Idle Gear612630030146
Gear Bush612630030148

Oil Management & Sealing Components

Component DescriptionPart NumberSource
Oil Cooler612630010050
Oil Cooler Cover612630010072
Oil Cooler CoreOEM-specific (consult Weichai catalog)—
Front Oil Seal Housing612600010928
Front Bearing Cover61460080044E
Crankshaft612600020061 / 612600020866
Main Bearing / Connecting Rod Bearing612630020019A / 612630020018A
Oil PumpOEM-specific (consult Weichai catalog)—
Oil PanOEM-specific (consult Weichai catalog)—

Intake & Exhaust System Components

Component DescriptionPart NumberSource
Exhaust Manifold (Front)612600111709 / 612600111290
Intake ManifoldOEM-specific (consult Weichai catalog)—
Intake Manifold Gasket612630120005
Exhaust Manifold Gasket612630110048
Turbocharger AssemblyOEM-specific (consult Weichai catalog)—

Fasteners & Mounting Hardware

Component DescriptionPart NumberSource
Hexagon Flange Bolt612630040144
Hexagon Head Bolt (Seal)90003802443S
Hexagon Head Bolt (Short)90011290007S
Hexagon Head Bolt (Long)90011350076S
Cylindrical Pin612639000087 / 612639000061
Cylindrical Pin90015200021
Wave Spring Washer90003932023
Pulling Rivet612600040228
Seal Ring1000101895


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Product Detail

Cylinder Head Cover Assembly for Weichai WP12 Engine – Part No. 612630040005

The Cylinder Head Cover Assembly (Part No. 612630040005, also known as a Valve Cover or Rocker Arm Cover) is a precision-engineered engine component manufactured by Weichai Power Co., Ltd. (潍柴动力), a globally prominent diesel engine manufacturer based in Weifang, Shandong Province, China. Founded in 1946, Weichai Power has grown into one of the world's leading powertrain manufacturers, serving markets across heavy-duty commercial vehicles, construction machinery, marine propulsion, generator sets, and agricultural equipment.

omponent DescriptionPart NumberSource / Reference
Cylinder Head Cover (Valve Cover) – Main Item612630040005
Cylinder Head Cover Gasket612630040007
Cylinder Head Cover Gasket (Alternative)610800040229
Cylinder Head Cover Gasket (Alternative)612650040043
Cylinder Head Cover Gasket (4‑valve variant)612650040011
Cylinder Head Cover Gasket (Heavy‑duty)614040021
Cylinder Head Cover Gasket (Alternative)614040021-1
Cylinder Head Cover Gasket (Alternative)612630040066
Cylinder Head Cover Assembly (Complete)1001167541
Cylinder Head Cover (Alternative)612600040149 (WD615/WP10)
Cylinder Head Cover (Alternative)614040065
Cylinder Head Cover (Alternative)1101111-00258-001
Oil Filler Cover Assembly1004020407
Oil Filler Cap1004020402

Valve Train Components (Internal to Cylinder Head Cover)

Component DescriptionPart NumberSource
Valve, Intake612630050146
Valve, Exhaust612630050002
Valve Spring612630050005
Valve Spring Top Retainer612630050014
Valve Collet / Lock612630050015
Valve Oil Seal612600040114
Valve Seat, Intake612630040075
Valve Seat, Exhaust612630040076
Valve Guide, Intake612630040181
Push Rod1001454037
Valve Bridge1001243202
Tappet (Valve Lifter)612630050100
Rocker Arm Assembly1000495390
Rocker Arm Set1000881645
Rocker Arm Bracket Assembly612630050013
Rocker Arm Shaft612630050030
Rocker Arm Shaft Set612630050018
Adjusting Bolt (Valve Lash)612630050011
Adjusting Nut612630050012
EVB Valve Bridge Assembly1000495068
EVB Bracket Assembly1014936608

Cylinder Head & Gasket Components

Component DescriptionPart NumberSource
Cylinder Head Gasket (WP12)612630040006
Cylinder Head Gasket1005000997
Cylinder Head Assembly1007877682
Cylinder Head Subassembly1014857474
Injector Bush612630040026
Injector Bush Sealing Ring1004257065
Bowl Plug612600040639, 612600040634, 612600040633
Cylinder LinerOEM-specific (consult Weichai parts catalog)—
Cylinder Head BoltOEM-specific (consult Weichai parts catalog)—

Camshaft & Timing Components

Component DescriptionPart NumberSource
Camshaft Assembly1001155303 / 1001155304
Camshaft Timing Gear612630030003
Camshaft Thrust Plate612630030002
Idler Gear Assembly612630030150
Idler Gear Shaft612630030151
Small Idle Gear612630030146
Gear Bush612630030148

Oil Management & Sealing Components

Component DescriptionPart NumberSource
Oil Cooler612630010050
Oil Cooler Cover612630010072
Oil Cooler CoreOEM-specific (consult Weichai catalog)—
Front Oil Seal Housing612600010928
Front Bearing Cover61460080044E
Crankshaft612600020061 / 612600020866
Main Bearing / Connecting Rod Bearing612630020019A / 612630020018A
Oil PumpOEM-specific (consult Weichai catalog)—
Oil PanOEM-specific (consult Weichai catalog)—

Intake & Exhaust System Components

Component DescriptionPart NumberSource
Exhaust Manifold (Front)612600111709 / 612600111290
Intake ManifoldOEM-specific (consult Weichai catalog)—
Intake Manifold Gasket612630120005
Exhaust Manifold Gasket612630110048
Turbocharger AssemblyOEM-specific (consult Weichai catalog)—

Fasteners & Mounting Hardware

Component DescriptionPart NumberSource
Hexagon Flange Bolt612630040144
Hexagon Head Bolt (Seal)90003802443S
Hexagon Head Bolt (Short)90011290007S
Hexagon Head Bolt (Long)90011350076S
Cylindrical Pin612639000087 / 612639000061
Cylindrical Pin90015200021
Wave Spring Washer90003932023
Pulling Rivet612600040228
Seal Ring1000101895


612630040005 HEAD COVER ASSY WP12 WEICHAI ENGINE
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Contact us

WhatsApp:+86-172 696 29279

WeChat:172 6962 9279

E-mail:asher@wuchenjialianspareparts.com

Tel:+86-172 696 29279

Address:No. 667, Zhujiang Road, Xuejiadao 

Street, Huangdao District, Qingdao, Qingdao Area, China (Shandong) Pilot Free Trade Zone

Products

Excavator Parts
Wheel Loader Accessories
Bulldozer Parts
Crane Accessories
Truck Parts
Engine Parts
Transmission Parts
Road Roller Accessories
Grader Accessories
Tire

Service

Pre-Sale Consultation

Logistics Services

After-Sale Services

Downloads

Company

About Us

Contact Us

 

Industry

Mine Applications
Construction
Port Logistics
Agricultural Applications

© Copyright - 2026 Qingdao Wuchen Jialian International Trade Co., Ltd . All Rights Reserved.

© Copyright - 2026 Qingdao Wuchen Jialian International Trade Co., Ltd . All Rights Reserved.

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