37107-02300 Mitsubishi Front & Rear Oil Seal | Stop Leaks

37107-02300 Mitsubishi front and rear oil seals prevent oil leakage from crankshaft ends, featuring oil-resistant rubber and precise fit. They ensure engine lubrication and reduce waste. We offer original and aftermarket options, balancing reliability and cost-effectiveness.

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Product Details

	37107-02300 Mitsubishi front and rear oil seals are critical components designed to seal the gaps between the crankshaft and engine block (front seal) and crankshaft and flywheel housing (rear seal). Their primary function is to prevent engine oil from leaking out while blocking contaminants like dust and moisture from entering—essential for maintaining proper lubrication, reducing oil consumption, and protecting internal engine parts in Mitsubishi vehicles, industrial machinery, and generators.

	Constructed from high-quality materials such as nitrile rubber or fluoroelastomer (FKM), these seals exhibit excellent resistance to engine oil, high temperatures (up to 150°C), and wear. The rubber compound is reinforced with a metal casing or spring to maintain radial pressure, ensuring a tight seal even as the crankshaft rotates at high speeds. This design minimizes friction between the seal and crankshaft, extending service life and reducing power loss.

	The precision-machined sealing lip ensures a perfect fit with the crankshaft’s surface, eliminating gaps that could cause leaks. This tight seal is crucial for preventing oil starvation in critical components like bearings and pistons, which directly impacts engine performance and longevity.

	Ningbo Qiuning Trading Co., Ltd., a professional supplier, provides high-quality 37107-02300 oil seals. We offer both original and aftermarket versions to meet diverse needs. Original seals adhere strictly to Mitsubishi’s specifications, with material formulations and dimensional accuracy matching factory standards—guaranteeing seamless compatibility and OEM-level sealing performance, ideal for users prioritizing long-term reliability. Aftermarket seals, produced with rigorous testing and premium materials, deliver comparable leak resistance and durability at a competitive price, suitable for those seeking a balance between quality and budget.

	All our 37107-02300 oil seals undergo comprehensive inspections, including pressure resistance tests, temperature tolerance checks, and fitment verification, to meet industry standards. Whether original or aftermarket, they ensure reliable sealing, supporting stable engine operation and reducing maintenance costs.

	For inquiries about 37107-02300 Mitsubishi front and rear oil seals, feel free to contact us. Our team will assist you in selecting the best option for your equipment.

	Contact us:

	WeChat/WhatsApp：+8615888032469

	E-mail：allen@perkins-rx.com

Mitsubishi S12R-PTA， S12R-PTA2，S12R-PTAA2 Engine spare parts
Number	Part description	P/N
1	Ring group, piston	37517-10010
2	Cylinder liner, cylinder	37507-82600
3	O-ring, cylinder liner	37507-32400
	O-ring, cylinder liner	37107-04201
	O-ring, cylinder liner	37107-04300
4	piston	37517-30101,37517-17700
5	Sales, piston	37517-18100
6	Gasket kit, major overhaul	37794-90270
7	Gasket, cylinder head	37501-12200
8	Seals, oil	37511-04300
9	Seals, oil	37711-04300
10	intake valve	37504-40200
11	Guidance, intake valve	37101-10600
12	Valve seat, intake valve	37501-13100
13	exhaust valve	37504-40200
14	Guide rail, exhaust valve	37101-10600
15	Valve seat, exhaust valve	37501-13100
16	Bearing group, main bearing (standard)	37709-12010
	Bearing group, main (0.25)	37709-12020
	Bearing assembly, main (0.50)	37709-12030
	Bearing group, main (0.75)	37709-12040
	Bearing assembly, main engine (1.00)	37709-12050
17	Bearings, connecting rods (standard)	37519-13100
	Bearings, connecting rods (0.25)	37519-13200
	Bearings, connecting rods (0.50)	37519-13300
	Bearings, connecting rods (0.75)	37519-13400
	Bearings, connecting rods (1.00)	37519-13500
18	Bearings, thrust (standard)	37709-28100
	Bearing, thrust (0.25)	37709-28200
	Bearing, thrust (0.50)	37709-28300
	Bearing, thrust (0.75)	37709-28400
19	Starter Big Butt	37766-20201
20	Cylinder Head Assembly	37501-80050
21	AC generator	04343-38000
22	Water pump assembly, water	37545-80011,37745-60011
23	Tip assembly, nozzle	37560-17500,37560-17700,
		37561-17500
24	Nozzle assembly	37560-39002,37560-22012
25	Pump, feed	04245-01120
26	Pump assembly injection	48273-00005,48274-00005,
		PS6-HL-50，PS6-HR-50;
		48A50-08005，48A60-08005，
27	speed controller	04410-53100，XS-400B-03
28	Governor actuator	04410-32011，SG4017BR-01
29	Turbocharger	49182-03471,49182-03481,
		49182-03880,49182-03890,
		49182-03821,49182-03830
30	DC solenoid valve	04400-08801,04400-08901
		04400-09201
		WOODWARD 2370-24ESU1B5S
31	Pump assembly oil	37735-00031
32	Nozzle assembly	37560-39002,37560-22012
33	Triangle belt, AC generator	37768-04200
34	Oil element, full flow rate	37540-11100
35	Oil element, bass	37540-02100
36	Fuel element	32562-60300
37	Cleaning agent components, air	47220-39802,47220-47800

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37107-02300 Mitsubishi Front & Rear Oil Seal | Stop Leaks