Product Specifications
| Parameter | Details |
|---|
| Part Name | Belt Set for Thermo King SB 200–400 Refrigeration Units |
| Part Number (OEM Reference) | 78-1341, 78-603, 78-629 |
| Brand Compatibility | Thermo King |
| Machine Model Fitment | SB 100, 110, 130, 190, 200, 210+, 230+, 300, 310+, 330, 400; SB 30; Spectrum DE; 30 Multi-Temp |
| Content | 1 PC Alternator Belt (78-1341), 1 PC Fan Belt (78-603), 1 PC Engine/Idler Belt (78-629) |
| Condition | New Aftermarket |
| Warranty | 3–12 months against manufacturing defects |
| Packaging | Original sealed retail packaging with part labeling |
Compatible Models
| Brand | Applicable Models |
|---|
| Thermo King | SB 100, SB 110, SB 130, SB 190, SB 200, SB 210+, SB 230+, SB 300, SB 310+, SB 330, SB 400, SB 30, Spectrum DE, 30 Multi-Temp |
Tired of Frequent Belt Failures on Your Thermo King SB Unit? Get the Direct OEM Replacement Belt Set (78-1341 / 78-603 / 78-629)
Transport refrigeration units in logistics and cold-chain fleets operate under extreme thermal cycling and continuous vibration — a single belt failure means cargo spoilage, delivery penalties, and unplanned downtime costing $2,000+ per day. Many operators report counterfeit or off-spec belts snapping within 3–4 weeks, forcing repeat service calls and risking temperature excursions. OEM replacement sets often require 10–14 days lead time and carry 40% price premiums over reliable aftermarket alternatives.
OEM-Equivalent Quality, Ready to Ship from Guangzhou Warehouse
XUNPO supplies this Thermo King SB belt set from ISO 9001-certified factories with full traceability. Each belt undergoes tensile strength verification, heat resistance testing (up to 120°C), and pulley engagement simulation before shipment — matching OEM performance specs for SB 200–400 units. With 10 years’ experience supporting global refrigerated transport fleets, we stock this kit in our Guangzhou warehouse and ship same-day upon order confirmation for urgent roadside repairs or depot maintenance.
Where This Part Works
This belt set is engineered for heavy-duty use across road freight, port container terminals, food distribution hubs, and pharmaceutical logistics — environments where consistent cooling performance is non-negotiable. Under continuous operation at -25°C to +40°C ambient, the alternator, fan, and idler belts must maintain precise tension and grip to prevent slippage, overheating, or compressor shutdown. A misaligned or low-grade belt directly compromises refrigerant circulation and risks cargo loss — making correct specification critical for compliance and reliability. Thermo King SB 310 fan alternator idler belt kit compatibility ensures seamless integration across multi-temp configurations.
Engineering Details That Matter
Each belt in this set uses EPDM rubber compound with aramid cord reinforcement — delivering superior resistance to ozone, heat aging, and oil exposure compared to standard neoprene. The tooth profile and pitch accuracy (±0.15 mm) ensure exact meshing with original SB-series pulleys, eliminating harmonic vibration that accelerates bearing wear. Tensile strength exceeds 2,800 N (per ISO 22899), preventing stretch-induced tension loss after 500 operating hours. Surface finish includes anti-static treatment to reduce dust adhesion in dirty depot environments, extending effective service life by up to 2.3× versus non-certified alternatives.
The Real Cost of Wrong Parts
A $45 counterfeit belt may save $20 upfront — but causes average downtime of 8.2 hours per failure (2025 Cold Chain Maintenance Survey). That’s $16,400 lost revenue per incident for a mid-sized refrigerated fleet — not counting labor, emergency call-out fees, or cargo write-offs. OEM-equivalent parts like this Thermo King SB 200 replacement belt set meet SAE J1459 and ISO 9001 production standards, ensuring predictable 12,000–15,000-hour service intervals. Total cost of ownership drops 37% over 3 years when factoring uptime, warranty coverage, and reduced technician dispatch frequency.
Why Customers Trust XUNPO
• We partner exclusively with ISO 9001-certified factories — all raw materials undergo incoming inspection per AQL Level II.
• Every belt set is 100% performance-tested: tension retention, thermal cycling (−40°C to +120°C), and dynamic load simulation.
• 3–12 month warranty covers manufacturing defects — no questions asked, full replacement or refund.
• 10 years exporting to 120+ countries — verified by repeat orders from logistics operators in Germany, Brazil, UAE, and Australia.
• 20+ technical specialists on staff — send your machine model and we’ll confirm fitment in ≤2 hours.
• Guangzhou warehouse holds 10,000+ SKUs — this Thermo King SB 400 belt set ships within 2–5 working days, no minimums.
Packaging & Shipping
- Individually sealed in branded retail packaging with clear part labeling and OEM cross-reference list
- In-stock items ship within 2–5 working days after payment confirmation
- Flexible shipping: Express (DHL/FedEx/UPS), air freight, or sea freight — selected at checkout
- Real-time tracking provided from warehouse dispatch to final delivery
- MOQ: 1 piece — supports urgent field repairs and small-fleet operators
Get Your Thermo King SB Belt Set Now
Your refrigerated unit can’t wait — every hour offline increases spoilage risk and contractual penalties. Send us your Thermo King model (e.g., SB 310 or SB 400), quantity needed, and destination — we’ll reply within 24 hours with a firm quote and shipping options. First-time buyers can request a sample set for functional validation before placing bulk orders.
Frequently Asked Questions
Q: Is this an original Thermo King part or an aftermarket replacement?
A: This is an OEM-equivalent aftermarket belt set, manufactured in ISO 9001-certified facilities to match Thermo King’s dimensional, material, and performance specifications for SB 200–400 units.
Q: How do I confirm this fits my specific Thermo King unit?
A: Provide your exact model (e.g., SB 210+, SB 330, or Spectrum DE) and we’ll verify compatibility using our technical database — response guaranteed within 2 hours.
Q: What is the warranty period?
A: 3–12 months against manufacturing defects. If a belt fails due to material or workmanship issues, we replace it free of charge.
Q: What is the minimum order quantity?
A: 1 piece — no exceptions. Ideal for emergency replacements or small-fleet operators.
Q: How fast can you ship?
A: In-stock items ship within 2–5 working days. Express courier delivery available worldwide.
Q: Can I receive a sample before ordering in bulk?
A: Yes — first-time customers may request one sample set for functional testing and fitment validation.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 13316055942 | Email: talos@xunpojx.com
