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261-0428 2637A003 Idler Pulley Excavator Engine Parts For 312E 313D2 C4.4 3054C C6.6

Large Image : 261-0428 2637A003 Idler Pulley Excavator Engine Parts For 312E 313D2 C4.4 3054C C6.6

Product Details:

Place of Origin:	China
Brand Name:	OEM
Model Number:	261-0428 2637A003

Payment & Shipping Terms:

Minimum Order Quantity:	1 PCS
Price:	Negotiable
Packaging Details:	Wooden box for heavy parts, paper carton for light parts
Delivery Time:	3-7 working days
Payment Terms:	T/T, D/P, D/A,Western Union, L/C, MoneyGram
Supply Ability:	100-2000

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Detailed Product Description

Category:	Engine Parts	Part Number:	261-0428 2637A003
Product Name:	Idler Pulley	Machine Number:	312D2 312E 313D2 314E CR 316E L 318D2 L
Application:	Excavator	Lead Time:	1-3 Days For Delivery
Packing:	Standard Export Carton
Highlight:	Excavator idler pulley 312E , Engine parts 313D2 C4.4 , Idler pulley 3054C C6.6

261-0428 2637A003 Idler Pulley Excavator Engine Parts For 312E 313D2 C4.4 3054C C6.6

Specifiion

Engine Number	C4.4 3054C C6.6 C7.1
Name	Idler Pulley
Parts No	261-0428 2637A003
Machine Number	312D2 312E 313D2 314E CR 316E L 318D2 L
Lead time	1-3 DAYS
Quality	Brand new, OEM quality
MOQ	1 PCS
Means of transport	By sea/air, DHL FEDEX UPS TNT
Packing	As request or standard packing

Key functions & working principle

Working Principle	1. Belt Guidance: The idler pulley is mounted at a fixed position in the engine’s accessory drive system, guiding the serpentine belt along the optimal path between driven components (alternator, water pump, air compressor).
	2. Tension Assistance: Works in conjunction with the automatic belt tensioner to distribute belt tension evenly – preventing localized stress and extending belt life.
	3. Low-Friction Rotation: The sealed ball bearing allows the pulley to rotate freely with the belt (minimal friction), reducing energy loss and belt wear.
	4. Alignment Maintenance: Precision machining ensures the pulley rim is perfectly perpendicular to the belt path – avoiding belt off-tracking, fraying, or premature failure.
Core Functions	1. Guide Belt Routing: Ensures the serpentine belt follows the correct path to drive all engine accessories – critical for proper system operation
	2. Reduce Belt Wear: Low-friction rotation and belt-friendly rim design minimize abrasion – extends belt service life by 30–50%
	3. Dampen Noise: Rubber/PU coating absorbs vibration between the belt and pulley – reduces operational noise (e.g., engine idle noise)
	4. Maintain Alignment: Prevents belt off-tracking and misalignment – avoids costly damage to accessories (e.g., alternator pulley damage)

Compatible models

ASPHALT PAVER AP-555E BG500E
BACKHOE LOADER 416E 416F 420E 420F 422E 422F 428E 428F 430E 430F 432E 432F 434E 434F 442E 444E 444F 450E 450F
EXCAVATOR 312D2 312D2 GC 312D2 L 312E 312E L 313D2 313D2 LGP 314E CR 314E LCR 316E L 318D2 L 318E L
INDUSTRIAL ENGINE C4.4 C6.6 C7.1
KNUCKLEBOOM LOADER 2384C 2484C 559 559C 579C
TRACK-TYPE TRACTOR D3K XL D3K2 LGP D4K XL D4K2 XL D5K LGP D5K2 XL D6N LGP D6N OEM
VIBRATORY COMPACTOR CS-54B C.aterpillar.

More other pulley applied to C A T heavey machine

2078118 PULLEY AS-IDLER

966H, 972H, 980C, 980K, 980M, 982M, AP555E, BG500E, C11, C13, C7, C9, CX31-C13I, D8N, TH31-E61, TH35-C11I, TH35-C13I, TH35-C13T

6I0502 PULLEY

3054, 3054B, 3054C, 3054E, 307, 312, 312B L, 312C, 315, 315B L, 315C, 317, 414E, 416B, 416C, 416D, 416E, 420D, 420E, 422E, 424D, 426B, 426C, 428B, 428C, 428D, 428E, 430D, 430E, 432D, 432E, 434E, 436C,...

1979642 PULLEY AS-IDLER

14M, 16M, 3126, 3126B, 3126E, 330D, 330D FM, 330D L, 330D LN, 330D MH, 336D, 336D L, 336D LN, 336D2, 336D2 L, 3406E, 340D L, 340D2 L, 345C, 345C L, 345C MH, 345D, 345D L, 345D L VG, 349D, 349D L, 525C...

3565343 PULLEY

3452567 PULLEY-CRANKSHAFT

3452568 PULLEY

320D GC, 320D L, 320D2, 320D2 GC, 320D2 L, 320E, 320E L, 320E LN, 320E LRR, 320E RR, 323D L, 323D2 L, 323E L, 324E, 324E L, 324E LN, 329E, 329E L, 329E LN, C7.1

3484163 PULLEY

2384C, 2484C, 316E L, 318E L, 559C, 579C

3739606 PULLEY

312E, 312E L

3747380 PULLEY

314E CR, 314E LCR

2978682 PULLEY-FAN

D5R LGP, D6N, D6N LGP, D6N OEM

3697780 PULLEY

D6N LGP

3000180 PULLEY AS

AP-600D, AP-655D, AP555E, AS4251C

3590750 PULLEY-CRANKSHAFT

312D2, 312D2 GC, 312D2 L, 313D2, 313D2 LGP, 318D2 L, 416E, 416F, 420E, 420F, 422E, 422F, 428E, 428F, 430E, 430F, 432E, 432F, 434E, 434F, 442E, 444E, 444F, 450E, AP-300D, AP555E, BG500E, C4.4, CB-54, C...

2867848 PULLEY GP-ENGINE

416E, 416F, 420E, 420F, 422E, 422F, 428E, 428F, 430E, 430F, 432E, 432F, 434E, 434F, 442E, 444E, 444F, 613G, AP-300D, C4.4, C6.6, C7.1, CB-54, CB-64, CP-44, CS-44, CS-54, D3K XL, D4K XL, D5K LGP

2153507 PULLEY-FAN

420E, 430E, 432E, 434E, 442E, 444E

3590747 PULLEY-CRANKSHAFT

3054C, 3054E, 414E, 416E, 420D, 420E, 422E, 428D, 430D, 442D, 914G, AP-300, AP-650B, AP-800D, C4.4, CB-434D, CB-534D, CB-564D, CD-54, CP-433E, CP-533E, CS-433E, CS-533E, IT14G, IT14G2, PF-300C, PS-150...

2662235 PULLEY-FAN

414E, 416E, 422E, 428E

2287391 PULLEY-ALTERNATOR

3054C, 3054E, 3056, 3056E, 414E, 416D, 416E, 420D, 420E, 422E, 424D, 428D, 428E, 430D, 430E, 432D, 432E, 434E, 442D, 442E, 444E, 924G

Directory listing

Pos.	Part No	Qty	Parts name	Comments
1	261-0428	[1]	PULLEY AS-IDLER
	307-2242 M	[1]	BOLT (M10X1.5X45-MM)
2	261-4320	[1]	PULLEY (8-GROOVE)
3	6I-0593 M	[6]	BOLT (M10X1.5X30-MM)
4	321-9972	[1]	DRIVE AS-FAN
5	321-9977	[1]	BRACKET
6	309-6668	[1]	BELT-SERPENTINE
	M		METRIC PART

261-0428 2637A003 Idler Pulley Excavator Engine Parts For 312E 313D2 C4.4 3054C C6.6 0

We could supply the following spare parts

1 Hydraulic parts: hydraulic pump, main valve, hydraulic cylinder, final drive, travel motor, swing machinery, swing motor etc.

2 Engine parts: engine ass’y, piston, piston ring, cylinder block, cylinder head, crankshaft, turbocharger, fuel injection pump, starting motor and alternator etc.

3 Undercarriage part: Track roller, Carrier roller, Track Link, Track shoe, Sprocket, Idler and Idler cushion etc.

4 Cab parts: operator’s cab, wiring harness, monitor, controller, seat, door etc.

5 Cooling parts: Radiator, air conditioner, compressor, after cooler etc.

6 Other parts: Service kit, swing circle, engine hood, swing joint, fuel tank, filter, boom, arm, bucket etc.

Packing and Shipping

Packing Details :

inner packing : plastic film for wrapping

external packing : wooden

Shipping :

within 3 days after received the payment , by air or by express or by sea on the basis of the

quantity and emergency circumstances.

1. By Couriers: DHL, UPS, FEDEX, TNT are the main courier companies we are cooperated,

2. By Air: Delivery from the Guangzhou air port to customer's destination city air port.

3. By Sea: Delivery from the Huangpu port .

Tag:

Contact Person: Mr. Paul

Tel: 0086-15920526889

Fax: +86-20-89855265

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261-0428 2637A003 Idler Pulley Excavator Engine Parts For 312E 313D2 C4.4 3054C C6.6

261-0428 2637A003 Idler Pulley Excavator Engine Parts For 312E 313D2 C4.4 3054C C6.6

Excavator idler pulley 312E

Engine parts 313D2 C4.4

Idler pulley 3054C C6.6

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diesel engine spare parts,

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