Chongqing Cummins Engine Co., Ltd. (hereinafter referred to as “Chongqing Cummins”) was established in 1995, located in Chongqing City. It’s a modern manufacturer 50:50 Joint Venture shared by Chongqing Machinery CO., LTD and Cummins USA. The company mainly produces Cummins M11/NT855/KT19/KT38/KT50 series Cummins engine and engine parts, we have listed some of the engine parts with part name and part number for your reference as follows:
Cummins M11/NT855/KT19/KT38/KT50 Series Engine Parts
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Part NO.
|
Part Name
|
Part NO.
|
Part Name
|
Part NO.
|
Part Name
|
Part NO.
|
Part Name
|
Part NO.
|
Part Name
|
Part NO.
|
Part Name
|
4934607-20
|
Shield
|
3803519-10
|
Exhaust Valve Set
|
4914458-20
|
Injector
|
4913679-20
|
Offset Key
|
3165966-20
|
Plain Washer
|
3636817-20
|
Stater Motor
|
3899624-20
|
Cover
|
3803528-10
|
Exhaust Valve Set
|
4914505-20
|
Injector
|
4913680-20
|
Offset Key
|
3165967-20
|
Plain Washer
|
3636820-20
|
Stater Motor
|
4914416-20
|
Connector
|
3803529-10
|
Exhaust Valve Set
|
4914537-20
|
Injector
|
4913681-20
|
Offset Key
|
3165968-20
|
Plain Washer
|
3636821-20
|
Stater Motor
|
3027733-20
|
Connector
|
127930-20
|
Seat Ring
|
4914554-20
|
Injector
|
4914082-20
|
Offset Key
|
3165969-20
|
Plain Washer
|
4081239-20
|
Stater Motor
|
3047352-20
|
Seat Set
|
3017759-20
|
Seat Ring
|
4914555-20
|
Injector
|
4914083-20
|
Offset Key
|
3165970-20
|
Plain Washer
|
4913528-20
|
Stater Motor
|
43200-20
|
Bushing
|
3086192-20
|
Seat Ring
|
4915382-28
|
Injector
|
4914084-20
|
Offset Key
|
3165971-20
|
Plain Washer
|
4913553-20
|
Stater Motor
|
4953512-20
|
Bolt
|
205186-20
|
Exhaust Manifold
|
4999492-28
|
Injector
|
4914085-20
|
Offset Key
|
3165974-20
|
Plain Washer
|
5284083-20
|
Stater Motor
|
3328328-20
|
Seal Washer
|
3896414-20
|
Exhaust Manifold
|
4912080
|
Injector
|
4914086-20
|
Offset Key
|
3165981-20
|
Plain Washer
|
5284084-20
|
Stater Motor
|
3001301-20
|
Seal Ring
|
3043097-20
|
Gasket
|
4964170
|
Injector
|
4914305-20
|
Offset Key
|
3175027-20
|
Plain Washer
|
173007
|
Stater Motor
|
4061406-20
|
Seal Ring
|
4914214-20
|
Exhaust Elbow
|
4964171
|
Injector
|
4914306-20
|
Offset Key
|
3176133-20
|
Plain Washer
|
3021036
|
Stater Motor
|
3895020
|
Seal Ring
|
4994738-20
|
Connector
|
4964172
|
Injector
|
4914307-20
|
Offset Key
|
3176395-20
|
Plain Washer
|
3021038
|
Stater Motor
|
3088298-20
|
Seal Strip
|
4914725-20
|
Muffler
|
205462-20
|
Connection Stem
|
3042328-20
|
Plain Washer
|
3177045-20
|
Plain Washer
|
3636817
|
Stater Motor
|
3088161-20
|
Wear Piece
|
3036576-20
|
Temperature Meter
|
3008706-20
|
Strainer
|
3088291-20
|
Plain Washer
|
3178457-20
|
Plain Washer
|
3636820
|
Stater Motor
|
3177128-20
|
Wear Bushing
|
206091-20
|
Turning Gear
|
3054999-20
|
Strainer
|
3165822-20
|
Plain Washer
|
3200281-20
|
Plain Washer
|
3636821
|
Stater Motor
|
3628607-20
|
Plug
|
206093-20
|
Gear Shell
|
207244-20
|
Seal Ring
|
3628001-20
|
Plain Washer
|
3200772-20
|
Plain Washer
|
3899973
|
Stater Motor
|
69047A-20
|
Bolt
|
3019153-20
|
Turning Shaft
|
4914484-20
|
Tool
|
8265-20
|
Plain Washer
|
3600283-20
|
Plain Washer
|
4078512
|
Stater Motor
|
69771-20
|
Bolt
|
3201739-20
|
Turning Shaft
|
3006696-20
|
Press Plate
|
63322-20
|
Plain Washer
|
3627372-20
|
Plain Washer
|
5284083
|
Stater Motor
|
118226-20
|
Bolt
|
3018914-20
|
Bushing
|
3049326-20
|
Press Plate
|
63842-20
|
Plain Washer
|
3628902-20
|
Plain Washer
|
5284085
|
Stater Motor
|
206028-20
|
Bolt
|
3304173-20
|
Filter Seat
|
3049332-20
|
Press Plate
|
66292-20
|
Plain Washer
|
3629962-20
|
Plain Washer
|
9245-20
|
Bushing
|
217631-20
|
Bolt
|
205347-20
|
Valve Plunger
|
3060447-20
|
Press Plate
|
67684-20
|
Plain Washer
|
3636084-20
|
Plain Washer
|
3067168-20
|
Bushing
|
3028868-20
|
Bolt
|
3820320-20
|
Valve Plunger
|
3882991-20
|
Press Plate
|
67946-20
|
Plain Washer
|
3643906-20
|
Plain Washer
|
3029014-20
|
Support
|
3069026-20
|
Bolt
|
3176127-20
|
Seat Assy
|
3047964-20
|
Plunger Assy
|
68050-20
|
Plain Washer
|
3655702-20
|
Plain Washer
|
3634664-20
|
Cylinde Gasket
|
3161565-20
|
Bolt
|
3049691-20
|
Bypass Oil Pipe
|
3076125-20
|
Plunger Assy
|
68121-20
|
Plain Washer
|
3821657-20
|
Plain Washer
|
4022500-20
|
Cylinde Gasket
|
3175074-20
|
Bolt
|
4914547-20
|
Mount Assy
|
3642503-20
|
CAM Follwer
|
69324-20
|
Plain Washer
|
3895517-20
|
Plain Washer
|
4058790-20
|
Cylinde Gasket
|
3178257-20
|
Bolt
|
4914548-20
|
Mount Assy
|
3017961-20
|
Push Rod
|
69699-20
|
Plain Washer
|
S601-20
|
Plain Washer
|
3640318-10
|
Cylinde Head
|
3899390-20
|
Bolt
|
4914549-20
|
Mount Assy
|
3067830-20
|
Push Rod
|
70620-20
|
Plain Washer
|
S602-20
|
Plain Washer
|
3646321-10
|
Cylinde Head
|
S189C-20
|
Bolt
|
4914550-20
|
Mount Assy
|
AR 2308-20
|
Rocker Arm
|
102027-20
|
Plain Washer
|
S622-20
|
Plain Washer
|
3646322-10
|
Cylinde Head
|
S189-20
|
Bolt
|
4914551-20
|
Mount Assy
|
3069020-20
|
Rocker Arm Assy
|
108330-20
|
Plain Washer
|
S624-20
|
Plain Washer
|
3646323-10
|
Cylinde Head
|
S962-20
|
Bolt
|
4914552-20
|
Mount Assy
|
3406702-20
|
Bushing
|
109557-20
|
Plain Washer
|
S626-20
|
Plain Washer
|
3646324-10
|
Cylinde Head
|
156816-20
|
Bellows
|
4914553-20
|
Mount Assy
|
3655883-20
|
Cover Assy
|
109594-20
|
Plain Washer
|
S631-20
|
Plain Washer
|
3811989-10
|
Cylinde Head
|
203555-20
|
Bellows
|
4914954-20
|
Mount Assy
|
3024234-20
|
Support
|
112408-20
|
Plain Washer
|
S640-20
|
Plain Washer
|
4296715-10
|
Cylinde Head
|
3016742-20
|
Vent Pipe
|
3011224-20
|
Bypass Water Pipe
|
4296245-20
|
Expansion Tank
|
127018-20
|
Plain Washer
|
S658-20
|
Plain Washer
|
4914732-10
|
Cylinde Head
|
3046765-20
|
Connection Pipe
|
3018098-20
|
Bypass Water Pipe
|
4914905-20
|
Expansion Tank
|
127184-20
|
Plain Washer
|
S670-20
|
Plain Washer
|
4914733-10
|
Cylinde Head
|
3028235-20
|
Exhaust Pipe
|
3055710-20
|
Bypass Water Pipe
|
4914685-20
|
Tank&Support
|
127316-20
|
Plain Washer
|
S679-20
|
Plain Washer
|
4914938-10
|
Cylinde Head
|
3028237-20
|
Exhaust Pipe
|
3178319-20
|
Bypass Water Pipe
|
4914862-20
|
Water Pipe
|
127362-20
|
Plain Washer
|
S689-20
|
Plain Washer
|
4915267-10
|
Cylinde Head
|
3029614-20
|
Exhaust Pipe
|
3178320-20
|
Bypass Water Pipe
|
3655858-20
|
Expansion Tank
|
127454-20
|
Plain Washer
|
S690-20
|
Plain Washer
|
4915289-10
|
Cylinde Head
|
3036381-20
|
Exhaust Pipe
|
3348995-20
|
Bypass Water Pipe
|
3022193-20
|
Support
|
127571-20
|
Plain Washer
|
3914868-20
|
Cover Plate
|
4915442-10
|
Cylinde Head
|
3043032-20
|
Exhaust Pipe
|
4915201-20
|
Bypass Water Pipe
|
3051141-20
|
Belt Plate
|
128006-20
|
Plain Washer
|
3056139-20
|
Plain Pipe
|
3022157-20
|
Cylinde Liner
|
3073158-20
|
Exhaust Pipe
|
4999545-20
|
Bypass Water Pipe
|
3051114-20
|
Belt Shield
|
139990-20
|
Plain Washer
|
3630986-20
|
Plain Pipe
|
3022157-28
|
Cylinde Liner
|
3078024-20
|
Exhaust Pipe
|
206460-20
|
Gasket
|
4009638-20
|
Belt Shield
|
146157-20
|
Plain Washer
|
3633076-20
|
Plain Pipe
|
3055099-20
|
Cylinde Liner
|
3084656-20
|
Exhaust Pipe
|
3003657-20
|
Connector
|
4009649-20
|
Belt Shield
|
146159-20
|
Plain Washer
|
3635070-20
|
Plain Pipe
|
3055099-28
|
Cylinde Liner
|
3165237-20
|
Exhaust Pipe
|
3004718-20
|
Connector
|
4019757-20
|
Support
|
146161-20
|
Plain Washer
|
3634057-20
|
Connctor
|
3080760-20
|
Cylinde Liner
|
3252044-20
|
Exhaust Pipe
|
3055712-20
|
Connector
|
161535-20
|
Belt Pulley
|
146162-20
|
Plain Washer
|
3655229-20
|
Bolt
|
4009220-20
|
Cylinde Liner
|
3252045-20
|
Exhaust Pipe
|
3085733-20
|
Connector
|
3009483-20
|
Belt Pulley
|
146163-20
|
Plain Washer
|
3925186-20
|
Screw
|
4009220-28
|
Cylinde Liner
|
3252046-20
|
Exhaust Pipe
|
130394-20
|
Connection Pipe
|
3025928-20
|
Belt Pulley
|
146172-20
|
Plain Washer
|
3251001-20
|
Bolt
|
4916451-20
|
Cylinde Liner
|
3254846-20
|
Exhaust Pipe
|
3003582-20
|
Bypass Oil Pipe
|
3035168-20
|
Belt Pulley
|
170664-20
|
Plain Washer
|
187368-20
|
Connector
|
3081283CE-10
|
Cylinde Block
|
3628657-20
|
Exhaust Pipe
|
3038026-20
|
Bypass Oil Pipe
|
3037340-20
|
Belt Pulley
|
182086-20
|
Plain Washer
|
9539A-20
|
Hose
|
3081283-10
|
Cylinde Block
|
3628658-20
|
Exhaust Pipe
|
3038028-20
|
Bypass Oil Pipe
|
3046206-20
|
Belt Pulley
|
193136-20
|
Plain Washer
|
60985-20
|
Hose
|
3081283-18
|
Cylinde Block
|
3628659-20
|
Exhaust Pipe
|
3016675-20
|
Injector
|
3046207-20
|
Belt Pulley
|
200861-20
|
Plain Washer
|
61554-20
|
Hose
|
3088303-10
|
Cylinde Block
|
3630172-20
|
Exhaust Pipe
|
3016676-20
|
Injector
|
3069778-20
|
Belt Pulley
|
203310-20
|
Plain Washer
|
63223-20
|
Hose
|
3088303-18
|
Cylinde Block
|
3630173-20
|
Exhaust Pipe
|
3016676-28
|
Injector
|
3073676-20
|
Belt Pulley
|
203518-20
|
Plain Washer
|
64775-20
|
Hose
|
3177638-10
|
Cylinde Block
|
3630241-20
|
Exhaust Pipe
|
3022197-20
|
Injector
|
3165325-20
|
Belt Pulley
|
203760-20
|
Plain Washer
|
64978-20
|
Hose
|
3648402-10
|
Cylinde Block
|
3630242-20
|
Exhaust Pipe
|
3022197-25
|
Injector
|
3165330-20
|
Belt Pulley
|
205059-20
|
Plain Washer
|
67185-20
|
Hose
|
3648602-10
|
Cylinde Block
|
3630257-20
|
Exhaust Pipe
|
3022197-28
|
Injector
|
3165409-20
|
Belt Pulley
|
205126-20
|
Plain Washer
|
67369-20
|
Hose
|
3648602-18
|
Cylinde Block
|
3630258-20
|
Exhaust Pipe
|
3047991-20
|
Injector
|
3165427-20
|
Belt Pulley
|
205128-20
|
Plain Washer
|
102522-20
|
Hose
|
4060393-20
|
Cylinde Block
|
3630260-20
|
Exhaust Pipe
|
3052255-20
|
Injector
|
3165448-20
|
Belt Pulley
|
205168-20
|
Plain Washer
|
104296-20
|
Hose
|
4060883-10
|
Cylinde Block
|
3630261-20
|
Exhaust Pipe
|
3052255-28
|
Injector
|
3165461-20
|
Belt Pulley
|
213082-20
|
Plain Washer
|
107063-20
|
Hose
|
4060883-18
|
Cylinde Block
|
3883410-20
|
Exhaust Pipe
|
3053124-20
|
Injector
|
3655381-20
|
Belt Pulley
|
423280-20
|
Plain Washer
|
116146-20
|
Hose
|
4060393
|
Cylinde Block
|
4003994-20
|
Exhaust Pipe
|
3053124-28
|
Injector
|
4060692-20
|
Belt Pulley
|
554802-20
|
Plain Washer
|
149274-20
|
Hose
|
3054948-20
|
Seal Ring
|
4060885-20
|
Exhaust Pipe
|
3053126-20
|
Injector
|
4060812-20
|
Belt Pulley
|
3000082-20
|
Plain Washer
|
179910-20
|
Hose
|
170296-20
|
Spring Seat
|
4913557-20
|
Exhaust Pipe
|
3053126-25
|
Injector
|
4060849-20
|
Belt Pulley
|
3003163-20
|
Plain Washer
|
179912-20
|
Hose
|
205094-20
|
Spring Seat
|
4913840-20
|
Exhaust Pipe
|
3054216-20
|
Injector
|
4061039-20
|
Belt Pulley
|
3005594-20
|
Plain Washer
|
179915-20
|
Hose
|
3036966-20
|
Spring Seat
|
4914169-20
|
Exhaust Pipe
|
3054216-25
|
Injector
|
4913515-20
|
Belt Pulley
|
3009329-20
|
Plain Washer
|
179917-20
|
Hose
|
3042745-20
|
Spring Seat
|
4914232-20
|
Exhaust Pipe
|
3054216-28
|
Injector
|
4913547-20
|
Belt Pulley
|
3009330-20
|
Plain Washer
|
179920-20
|
Hose
|
3047395-20
|
Spring Seat
|
4914233-20
|
Exhaust Pipe
|
3054218-20
|
Injector
|
4913686-20
|
Belt Pulley
|
3010708-20
|
Plain Washer
|
179924-20
|
Hose
|
4913845-20
|
Spring Seat
|
3037824-20
|
Exhaust Pipe
|
3054218-25
|
Injector
|
4913718-20
|
Belt Pulley
|
3010913-20
|
Plain Washer
|
179930-20
|
Hose
|
4914096-20
|
Spring Seat
|
3165312-20
|
Exhaust Pipe
|
3054218-28
|
Injector
|
4913785-20
|
Belt Pulley
|
3012467-20
|
Plain Washer
|
179940-20
|
Hose
|
3001663-20
|
Seat Plate
|
205337-20
|
Exhaust Pipe
|
3054219-28
|
Injector
|
4913816-20
|
Belt Pulley
|
3014103-20
|
Plain Washer
|
200517-20
|
Hose
|
3006456-20
|
Guide Pipe
|
3080980-20
|
Exhaust Pipe
|
3054220-20
|
Injector
|
3165907-20
|
Bolt
|
3014754-20
|
Plain Washer
|
3009805-20
|
Hose
|
3202210-20
|
Guide Pipe
|
142234-20
|
Gasket
|
3054220-28
|
Injector
|
3655811-20
|
Connection Plate
|
3017346-20
|
Plain Washer
|
3024128-20
|
Hose
|
4924208-20
|
Chamber Cover
|
3020943-20
|
Gasket
|
3054228-20
|
Injector
|
2888893-20
|
Belt Tensioner
|
3018007-20
|
Plain Washer
|
3049565-20
|
Hose
|
3039164-20
|
CAM Follower
|
3170965-20
|
Gasket
|
3054231-20
|
Injector
|
2888889-20
|
Belt Tensioner
|
3025485-20
|
Plain Washer
|
3200316-20
|
Hose
|
4061141-20
|
Press Plate
|
3031186-20
|
Exhaust Pipe
|
3054233-20
|
Injector
|
4913700-20
|
Support
|
3026269-20
|
Plain Washer
|
3626493-20
|
Hose
|
3003156-20
|
Lead Seal
|
3418759-20
|
Exhaust Pipe
|
3054233-28
|
Injector
|
4057646-20
|
Support Assy
|
3033626-20
|
Plain Washer
|
3631578-20
|
Hose
|
3015114-20
|
Outlet Pipe
|
3026237-20
|
Connector
|
3071497-20
|
Injector
|
4067518-20
|
Belt Tensioner Assy
|
3033627-20
|
Plain Washer
|
3632078-20
|
Hose
|
3015115-20
|
Outlet Pipe
|
3048689-20
|
Connector
|
3071497-25
|
Injector
|
3009949-20
|
Woodruff Key
|
3033800-20
|
Plain Washer
|
4967758-20
|
Hose
|
4060822-20
|
Outlet Pipe
|
3049015-20
|
Connector
|
3071497-28
|
Injector
|
3021592-20
|
Woodruff Key
|
3034320-20
|
Plain Washer
|
AS10025SS-20
|
Hose
|
208141-20
|
Outlet Pipe
|
4914964-20
|
Connector
|
3076132-20
|
Injector
|
3021596-20
|
Woodruff Key
|
3035177-20
|
Plain Washer
|
153408-20
|
Connector
|
3165314-20
|
Outlet Pipe
|
3202172-20
|
Bolt
|
3076703-20
|
Injector
|
3021597-20
|
Woodruff Key
|
3036900-20
|
Plain Washer
|
215921-20
|
Connector
|
3655785-20
|
Front Rocker Arm
|
3031187-20
|
Exhaust Pipe
|
3076703-28
|
Injector
|
3022353-20
|
Woodruff Key
|
3039609-20
|
Plain Washer
|
S1049A-20
|
Connector
|
207399-20
|
Support
|
3250503-20
|
Exhaust Pipe
|
3077715-20
|
Injector
|
200704-20
|
Offset Key
|
3041247-20
|
Plain Washer
|
170226-20
|
Support
|
214306-20
|
Support
|
3020988-20
|
Exhaust Pipe
|
3077715-28
|
Injector
|
200706-20
|
Offset Key
|
3042329-20
|
Plain Washer
|
205684-20
|
Support
|
3010348-20
|
Support
|
4061446-20
|
Support
|
3077760-20
|
Injector
|
200708-20
|
Offset Key
|
3042330-20
|
Plain Washer
|
3018092-20
|
Support
|
3010399-20
|
Support
|
3026051-20
|
Exhaust Pipe
|
3087587-20
|
Injector
|
200709-20
|
Offset Key
|
3042331-20
|
Plain Washer
|
3251776-20
|
Support
|
3058369-20
|
Support
|
186918-20
|
Connection Pipe
|
3087587-25
|
Injector
|
200711-20
|
Offset Key
|
3043477-20
|
Plain Washer
|
3254456-20
|
Support
|
3068573-20
|
Support
|
200766-20
|
Connection Pipe
|
3087587-28
|
Injector
|
200714-20
|
Offset Key
|
3045136-20
|
Plain Washer
|
3328744-20
|
Support
|
3165652-20
|
Support
|
119904-20
|
Connector
|
3087648-20
|
Injector
|
200715-20
|
Offset Key
|
3046246-20
|
Plain Washer
|
3883586-20
|
Support
|
3819498-20
|
Support
|
190351-20
|
Connector
|
3095773-20
|
Injector
|
200716-20
|
Offset Key
|
3067344-20
|
Plain Washer
|
3896347-20
|
Support
|
3884141-20
|
Support
|
200759-20
|
Connector
|
3095773-28
|
Injector
|
200717-20
|
Offset Key
|
3071075-20
|
Plain Washer
|
4914244-20
|
Support
|
4061048-20
|
Support
|
203432-20
|
Connector
|
3406604-20
|
Injector
|
200718-20
|
Offset Key
|
3085886-20
|
Plain Washer
|
206389-20
|
Flange Plate
|
4913769-20
|
Support
|
207175-20
|
Connector
|
3411821-20
|
Injector
|
200719-20
|
Offset Key
|
3165919-20
|
Plain Washer
|
3628411-20
|
Flange Plate
|
4914061-20
|
Support
|
3179979-20
|
Connector
|
3609865-25
|
Injector
|
200721-20
|
Offset Key
|
3165956-20
|
Plain Washer
|
173007-20
|
Stater Motor
|
4914070-20
|
Support
|
3629518-20
|
Connector
|
4296423-28
|
Injector
|
216782-20
|
Offset Key
|
3165957-20
|
Plain Washer
|
555241-20
|
Stater Motor
|
3655808-20
|
Spacer Bushing
|
4061257-20
|
Connector
|
4296806-20
|
Injector
|
3000491-20
|
Offset Key
|
3165959-20
|
Plain Washer
|
2871252-20
|
Stater Motor
|
179901-20
|
Cutoff Valve
|
4295724-20
|
Connector
|
4913770-20
|
Injector
|
3000492-20
|
Offset Key
|
3165960-20
|
Plain Washer
|
2871256-20
|
Stater Motor
|
3177040-20
|
Cutoff Valve Shaft
|
4914179-20
|
Cover
|
4914308-20
|
Injector
|
3000493-20
|
Offset Key
|
3165961-20
|
Plain Washer
|
3004699-20
|
Stater Motor
|
4060868-20
|
Ball Valve
|
3959121-20
|
Support
|
4914325-20
|
Injector
|
3000494-20
|
Offset Key
|
3165962-20
|
Plain Washer
|
3010125-20
|
Stater Motor
|
3067941-20
|
Ball Pin
|
145701-20
|
Exhaust Valve
|
4914328-20
|
Injector
|
3000495-20
|
Offset Key
|
3165963-20
|
Plain Washer
|
3021036-20
|
Stater Motor
|
205065-20
|
Drive Shaft
|
3035110-20
|
Exhaust Valve
|
4914452-20
|
Injector
|
3009953-20
|
Offset Key
|
3165964-20
|
Plain Washer
|
3021036-25
|
Stater Motor
|
205708-20
|
Drive Shaft
|
3088389-20
|
Exhaust Valve
|
4914453-20
|
Injector
|
3021600-20
|
Offset Key
|
3165965-20
|
Plain Washer
|
3021038-20
|
Stater Motor
|
3073707-20
|
Crankshaft
|
Remarks:
(1) If you need the M11/NT855/KT19/KT38/KT50 Series Engine Parts above or others, please further contact our sales.
(2) We can provide the M11/NT855/KT19/KT38/KT50 Series engine parts, as well as the complete genuine Cummins engine.
(3) The above engine parts are possible for the Cummins automotive engine, marine engine, construction engine, generators engine, marine generators engine, diesel pump engine.