<p>Get back on the road faster with reliable, OEM-equivalent belt replacement for your Thermo King SB 200–400 — no more downtime waiting for slow OEM shipments or risking counterfeit belts that snap mid-run. This <strong>Thermo King SB belt set</strong> delivers exact-fit performance across SB 200, 210+, 300, 310+, and 400 units — including hard-to-match multi-temp and +series models.</p> <ul> <li><strong>Triple-belt precision set</strong>: Includes 1 alternator belt (78-1341), 1 fan belt (78-603), and 1 engine/idler belt (78-629) — all tension-matched for synchronized drive system operation</li> <li>Verified cross-reference coverage for 18+ SB model variants, including SB 330 and Spectrum DE — a detail most suppliers overlook</li> <li>Engineered with EPDM rubber and aramid cord for heat resistance up to 120°C and 3× longer service life vs. generic imports</li> <li>Ships same-day from our Guangzhou warehouse — no MOQ, no wait, no guesswork</li> </ul>
| Parameter | Details |
|---|---|
| Part Name | Belt Set for Thermo King SB Refrigeration Units |
| Part Number (OEM Reference) | 78-1341 / 78-603 / 78-629 |
| Brand Compatibility | Thermo King |
| Machine Model Fitment | SB 100, SB 110, SB 130, SB 190, SB 200, SB 210, SB 210+, SB 230, SB 230+, SB 300, SB 310, SB 310+, SB 330, SB 400, SB 30 Multi-Temp, Spectrum DE |
| 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 | Individual protective packaging with labeled belt set kit |
| Brand | Applicable Models |
|---|---|
| Thermo King | SB 100, SB 110, SB 130, SB 190, SB 200, SB 210, SB 210+, SB 230, SB 230+, SB 300, SB 310, SB 310+, SB 330, SB 400, SB 30 Multi-Temp, Spectrum DE |
Transport refrigeration units in logistics fleets stop working—not from major failures, but from a single worn belt. A failed alternator or fan belt halts cooling, spoils cargo, and triggers costly penalties. OEM belts take 3+ weeks to arrive, while low-grade aftermarket sets last only half the service interval. Operators managing multiple Thermo King SB models struggle to source all three required belts—78-1341, 78-603, and 78-629—from one reliable supplier.
XUNPO supplies this Thermo King SB belt set from ISO-certified factories with strict incoming material inspection and full pre-shipment performance testing. Each belt meets original tension, elongation, and heat resistance specs—critical for continuous operation in refrigerated transport applications. With 10 years’ experience supplying transport refrigeration parts to fleet operators across North America, Europe, and Southeast Asia, we ensure precise fitment and consistent torque transmission across SB 200, SB 300, and SB 400 platforms.
This belt set operates under high-cycle thermal stress in refrigerated trailers, port container units, and long-haul truck fleets. It drives the alternator (78-1341), cooling fan (78-603), and engine/idler pulley (78-629) — all exposed to temperature swings from -25°C to +60°C and constant vibration. In mining logistics or cross-border cold chain operations, belt failure means cargo spoilage, compliance violations, and unplanned depot visits. The Thermo King SB 200 belt and SB 400 belt kit must deliver predictable service life—not just initial fit.
Each belt uses EPDM rubber compound with aramid cord reinforcement—proven to resist ozone cracking and thermal degradation better than standard neoprene. The 78-1341 alternator belt features a trapezoidal profile with precise pitch length tolerance (±0.5 mm), ensuring no slippage at generator RPMs above 12,000. The 78-603 fan belt is designed with multi-rib geometry for uniform load distribution across all ribs, reducing edge wear during variable-speed fan operation. The 78-629 engine/idler belt includes a reinforced backing layer to prevent flex fatigue at tight wrap angles common on SB series compact chassis layouts. All belts undergo tensile strength verification (≥2,200 N) and dynamic bend testing over 100,000 cycles before release.
A $25 counterfeit belt that fails after 200 hours costs far more than its price: $1,200 in spoiled pharmaceuticals, $800 in detention fees at EU ports, plus labor to re-tension and diagnose false voltage alarms. OEM-equivalent parts like this Thermo King transport refrigeration belt set for SB 200 210 300 310 400 reduce total cost of ownership by extending replacement intervals to 1,500–2,000 operating hours—matching original Thermo King specifications per ISO 9001 production records. Using non-compliant materials risks premature cracking, harmonic vibration, and alternator regulator damage—costing 5× more in secondary repairs.
We partner exclusively with ISO 9001-certified factories and perform incoming batch inspection on every raw material lot. Every belt set undergoes functional tension testing and dimensional verification before shipment. We offer 3–12 month warranty covering manufacturing defects—no questions asked. With 10 years exporting to 120+ countries, our technical team has verified over 15,000 part-to-machine matches for refrigeration and heavy equipment clients. You’ll get accurate part confirmation within 2 hours when you send your model and serial. Our Guangzhou warehouse holds ready stock of 10,000+ commonly used transport and construction parts—including this Thermo King SB belt set—for same-day dispatch.
Your refrigerated unit isn’t generating revenue while idle. Every hour without correct belts increases risk of cargo loss and late delivery penalties. Send us your machine model (e.g., SB 310), quantity, and destination—we’ll reply with a competitive quote within 24 hours. First-time buyers can request a sample set for testing before bulk ordering. Stock is available now in Guangzhou.
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 original Thermo King performance and dimensional specifications.
Q: How do I confirm if these belts fit my specific SB unit?
A: Provide your exact model (e.g., SB 210+ or SB 400) and, if available, the unit’s serial number—we’ll verify compatibility and respond within 2 hours.
Q: What is the warranty period?
A: 3–12 months warranty against manufacturing defects. Defective units are replaced free of charge upon return verification.
Q: What is the minimum order quantity?
A: 1 piece. We support urgent maintenance needs with no volume requirement.
Q: How fast can I receive the belts after ordering?
A: In-stock orders ship within 2–5 working days. Express options (DHL/FedEx) typically deliver to North America/Europe in 4–7 days.
Q: Can I receive a sample before placing a bulk order?
A: Yes—first-time customers may request a sample set for functional testing prior to bulk purchase.
Ready to order or need a quote?
Send your part number, machine model, and quantity — we'll respond within 24 hours.
WhatsApp: +86 187 2205 7128 | Email: talos@xunpojx.com
Parts available for all major excavator and heavy equipment brands
Guangzhou's trusted excavator parts supplier since 2015
8 core categories for all major brands
Fast dispatch from Guangzhou warehouse
Professional team for part verification
Global shipping with real-time tracking
Stop downtime from snapped or slipping belts—this Bobcat belt set delivers OEM-equivalent...
View Details
Stop losing uptime to noisy, short-lived drive belts — this bobcat drive...
View Details
Stop downtime from snapped or slipping belts on your Earthquake rear tine...
View Details
Stop fan clutch failures and avoid costly downtime on your Dodge Ram—this...
View DetailsOur experts are available 24/7 -- get a response within 2 hours.
