2025-10-01 Remote Andes Night Shift: CAT 349D2 Chassis Harness 503-0793 & Full-Line Alternatives from Growshine International
At 02:14 in a high-altitude Chilean copper mine, a CAT 349D2 suddenly lost CAN communication—chassis harness 503-0793 was chafed through by volcanic rock. Every hour of downtime costs USD 8 000. Growshine International (China) had the plug-and-play replacement airborne in 8 hours and the machine digging again before the next shift. That is the power of Chinese replacement harnesses.
Custom Development: 503-0793, 366-9315, SY225H power cable, any length, any connector, IP67/69K available, drawing ready in 48 h, delivery in 7 days.
Why Growshine International?
Growshine International (格莳国际) has focused on construction-machinery, heavy-truck, agricultural-machinery and passenger-car parts export for 14 years, serving 3 000+ customers in 126 countries. We offer:
- Full-machine harness, fan motor, relay, sensor one-stop basket for CAT, SANY, Komatsu, Shantui, Volvo, John Deere, etc.
- 24 h global air freight, average 60 % faster than dealer lead-time
- ISO/TS16949 approved, 12-month warranty
- Small MOQ, drop-shipping, OEM/ODM labelling
Long-tail keywords: Chinese CAT harness supplier, SANY excavator harness replacement, Komatsu PC1250 harness China export, construction-machinery harness ODM, heavy-truck chassis harness wholesale, farm-machinery harness custom, automotive relay Chinese factory, CAT 349D2 harness alternative, SY225H harness stock, Growshine harness export.
World-wide Hot-Sale Harness & Relay List (updated 2025-10-01)
| Serial | Part Number (with / without dash) | Brand & Component Name | Inquiry by E-mail |
|---|---|---|---|
| 1 | 503-0793 5030793 | CAT 349D2 chassis harness | Click to mail |
| 2 | 6156-81-9340 6156819340 | Komatsu SAA6D125E engine harness | Click to mail |
| 3 | 224-07-04000 2240704000 | Shantui SG21 grader engine harness | Click to mail |
| 4 | 6245-81-9130 6245819130 | Komatsu PC1250-8 engine harness | Click to mail |
| 5 | 206-5016 2065016 | CAT 345B 3176 engine harness | Click to mail |
| 6 | 366-9315 3669315 | CAT 320D/323D chassis harness | Click to mail |
| 7 | DYX300-70-10-10Q SY015029 | SANY SY225H main harness | Click to mail |
| 8 | 239-5929 2395929 | CAT 374D/365C C15 sensor harness | Click to mail |
| 9 | 224-07-01000 2240701000 | Shantui grader head-light harness | Click to mail |
| 10 | 418-7614 4187614 | CAT 349D C13 injector harness | Click to mail |
| 11 | 488-9252 4889252 | CAT 323D2L frame harness | Click to mail |
| 12 | 212-0848 2120848 | CAT speed sensor with harness | Click to mail |
| 13 | 354-0048 3540048 | CAT 349D C13 engine harness | Click to mail |
| 14 | 283-2932 2832932 | CAT 329D/325D/324D chassis harness | Click to mail |
| 15 | 479-6991 4796991 | CAT 336D2 frame harness | Click to mail |
| 16 | 372-4548 3724548 | CAT injector harness (common rail) | Click to mail |
| 17 | 198-2713 1982713 | CAT C7/C9 engine harness (custom OK) | Click to mail |
| 18 | 499-3921 4993921 | CAT 330D2 upper frame harness | Click to mail |
| 19 | 306-8610 3068610 | CAT 320D/323DL chassis harness | Click to mail |
| 20 | 366-9315 3669315 | CAT 320C/320D chassis harness | Click to mail |
| 21 | 487-0136 4870136 | CAT 318D2L chassis harness | Click to mail |
| 22 | 465-1255 4651255 | CAT 336D2 chassis harness | Click to mail |
| 23 | 319-1276 3191276 | CAT 315DL/318DL frame harness | Click to mail |
| 24 | 251-0140 2510140 | CAT 330C chassis harness | Click to mail |
| 25 | 366-9320 3669320 | CAT 329D/325D/324D chassis harness | Click to mail |
| 26 | 465-6190 4656190 | CAT 336D2L frame harness | Click to mail |
| 27 | 288-0526 2880526 | CAT D5K dozer engine harness | Click to mail |
| 28 | 459-8931 4598931 | CAT 349D2/349D2L frame harness | Click to mail |
| 29 | 419-0841 4190841 | CAT C9 injector harness | Click to mail |
| 30 | 499-3919 4993919 | CAT 330D2 chassis harness | Click to mail |
| 31 | 472-7726 4727726 | CAT 320D2 chassis harness | Click to mail |
| 32 | 291-7590 2917590 | CAT 320D chassis extension cable | Click to mail |
| 33 | 484-9792 4849792 | CAT 340D2L engine-coil harness | Click to mail |
| 34 | 323-9140 3239140 | CAT C9 engine harness | Click to mail |
| 35 | 437-2529 4372529 | CAT 323D2L frame harness | Click to mail |
| 36 | 478-6249 4786249 | CAT 329D2/330D2 chassis harness | Click to mail |
| 37 | 306-8797 3068797 | CAT 336D chassis harness | Click to mail |
| 38 | 388-6859 3886859 | CAT 374D chassis harness | Click to mail |
| 39 | 283-2933 2832933 | CAT 330D frame harness | Click to mail |
| 40 | 335-8402 3358402 | CAT 120K/140K/160K grader harness kit | Click to mail |
More part numbers & diagrams: ar-excel.com | cgsc66.com | en.xinsheng2024.com | hi-part.cn
Term Explanation (EN-ZH-RU)
- Fan motor 风扇马达 / вентиляторный мотор — mounted on engine radiator side, drives cooling fan. Ex: Caterpillar 345D fan motor.
- Chassis harness 底盘线束 / рамный жгут — runs inside main frame rails, connects sensors to ECU. Ex: Komatsu PC200-8 chassis harness.
- Injector harness 喷油器线束 / жгут форсунок — on cylinder head, links ECU to injectors. Ex: CAT C15 injector harness.
- Relay 继电器 / реле — located in cab relay box, switches high-current loads. Ex: SANY SY365C starter relay.
- Pressure sensor 压力传感器 / датчик давления — fitted at main pump outlet, monitors hydraulic pressure. Ex: CAT 320D hydraulic pressure sensor.
- Speed sensor 转速传感器 / датчик оборотов — installed on flywheel housing, reports engine rpm. Ex: Volvo FH13 speed sensor.
- Dashboard harness 仪表台线束 / жгут панели приборов — behind dashboard, feeds gauges & switches. Ex: XCMG QY50K dashboard harness.
- Rear lamp harness 尾灯线束 / жгут задних фонарей — at rear cross-member, powers tail lamps. Ex: Howo A7 rear-lamp harness.
- Alternator harness 发电机线束 / жгут генератора — on engine RHS, connects alternator to battery. Ex: Deutz TD226B alternator harness.
- A/C compressor harness 空调压缩机线束 / жгут компрессора КВ — at compressor clutch, controls engagement. Ex: John Deere 6R A/C compressor harness.
Field Case – 2025-09 Peruvian Copper Mine
Problem: CAT 349D2 (S/N GAX00555) halted on a 15° slope, no power, ECU offline.
Diagnosis: Diagnostic tool showed “U0001 CAN Bus Off”. Pin 7 (CAN-H) of harness 503-0793 was shorted to frame due to rock abrasion.
Solution:
1. Isolate battery, cut out damaged section;
2. Fit Growshine replacement 503-0793 with waterproof Deutsch connectors, 30 min plug-and-play;
3. Wrap new section with anti-abrasion textile sleeve and re-route inside guarding;
4. Clear codes, 2 h test-run OK, mine saved ≈ USD 50 k downtime.
Tip: Inspect chassis harness clips every 500 h; add rubber grommets on sharp edges.
Denso Relay Flash Sale
Denso relay 156700-1840, 156700-2190, 156700-3250, 156700-2770—buy 5 pcs get 1 pc free until stock ends.
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