Heavy Duty Heater Core Wholesale – OEM & Custom | SF Radiator

A weak heater core does more than leave the cab cold. It slows defrosting, tires drivers, and sends trucks back to the workshop. For importers and distributors, the right heavy duty heater core supplier means fewer returns and fewer complaints from end users.
Jiangyin Shengfei Radiator Co., Ltd manufactures aluminum radiators and vehicle air-conditioning systems in Jiangyin City, Jiangsu Province, China. This guide covers what international buyers should check before placing a wholesale order: specifications, materials, customization, quality control, and delivery terms. Use it to write a clear inquiry and to compare suppliers on facts.

Heavy Duty Heater Core for Trucks, Tractors & Engineering Vehicles

 
A heater core is a small heat exchanger behind the dashboard. Hot engine coolant flows through its tubes. The blower pushes cabin air across its fins, and that air warms the cab and clears the windshield.
A heavy-duty version works under harder conditions than a passenger car part. It faces long running hours, constant vibration, mixed coolant quality, and cold starts. Buyers in this segment usually need cores for:
  • Heavy trucks and pickup trucks
  • Agricultural machinery, such as tractors
  • Engineering and construction vehicles
  • Fleet and aftermarket replacement programs
Shengfei supplies automotive heat exchangers for pickup trucks, heavy trucks, cars, agricultural machinery, and engineering vehicles. You can view the current range on our Car A/C Heater Cores page.

Aluminum Heavy Duty Heater Core: Specifications & Core Sizes

Aluminum is the main material in our product line. The aluminum heater core benefits are practical for B2B buyers: low weight, good heat transfer, and a brazed structure that suits volume production. Quality still depends on design, brazing control, and testing, not on the material alone.
Core sizes vary by vehicle model, so we build to your sample, drawing, or OEM reference. The table shows what to confirm before you order.

Specification	What to confirm	Why it matters
Core size	Length, height, and thickness in mm	Decides fitment in the heater box
Inlet / outlet	Pipe diameter, position, and connection type	Prevents hose mismatch and leaks
Core design	Tube layout, fin type, and fin density	Affects heat output and airflow resistance
Material	Aluminum tubes, fins, and tanks	Affects weight, strength, and corrosion behavior
Coolant	Coolant type used in your market	A coolant compatible heater core resists internal damage
Surface treatment	Protective finish, if required	Ask about a heater core with anti-corrosion coating for harsh climates
Testing	Leak and pressure test requirements	Confirms quality before shipment
Packaging	Carton, pallet, and labeling needs	Protects fins and meets distributor needs

Availability of each option depends on the model and the order. We confirm all details in the quotation.

Why Choose Our Heavy Duty Heater Core Wholesale Supply?

Buyers compare many Chinese suppliers. These facts about our factory help you judge fit:
  • Dedicated factory: Our plant in Qingyang Town, Jiangyin covers 3,000 square meters.
  • Experienced team: Our technical core team has more than 20 years of experience in the automotive radiator industry.
  • In-house equipment: We use nitrogen-protected continuous brazing furnaces, automatic fin-forming machines, ultrasonic cleaners, and automatic water leak detectors.
  • Broad vehicle coverage: Our tooling covers pickup trucks, heavy trucks, cars, and agricultural and engineering vehicles.
  • After-sales follow-up: We track quality feedback and work to fix process issues that customers report.

Custom & OEM/ODM Heavy Duty Heater Core Solutions

Many buyers cannot find a standard core that fits their model or market. We develop non-standard products and support small batch trial production. Our OEM & ODM Radiator page explains our custom service.
A typical custom project follows five steps:
1.Send a sample, drawing, photo, or OEM number.
2.Our engineers review size, connections, and core structure.
3.We confirm specifications and send a quotation.
4.We build and test samples for your approval.
5.We start mass production after you approve the sample.
Some markets need a high performance heater core or an upgraded heater core for cold climates. Tell us the lowest operating temperature, the coolant type, and any complaints about your current part. We then review core thickness, fin density, and tube layout options with you. A heater core efficiency upgrade is a design decision, so we agree on targets before sampling.

Compatible Models: Howo, JMC, Tractors & More

Our product catalogue lists models such as Howo C7, Howo TX, JMC Euro 5, and several large and small tractors. Our products also cover vehicle series such as GM, Changan, Fukuda, and Tesla. Heater core availability differs by model, so send your vehicle details and we will confirm fitment.
A heater core for off-road vehicles faces vibration, dust, and long working hours. Tell us the machine type and working environment, and we will match the core structure to the application.
To confirm fitment quickly, send:
  • Vehicle brand, model, and production year
  • OEM or part number, if you have it
  • Photos of the old core with key dimensions

ISO/TS16949 Quality System: Heavy Duty Heater Core Manufacturer

Shengfei operates under the ISO/TS16949 automotive quality management system. For a new buyer, this means documented processes for production and inspection. We do not list certificate details in this article, so please ask for current documents when you request a quotation.
One certificate is not enough to judge a supplier. A reliable heavy duty heater core manufacturer should also be ready to show:
  • Inspection records for each batch
  • Clear leak-test procedures
  • Batch marking that supports traceability
  • Samples before you place a volume order
Buyers often read aftermarket heater core reviews before they choose a brand. Reviews help, but they rarely show batch consistency. Ask for test records and sample results as well.

Our Production Process: Nitrogen Brazing & Leak Testing

 
Process control decides whether a core leaks after six months. Our line uses these key machines:
  • Automatic fin forming: Produces consistent fin shape and spacing, which supports stable heat transfer.
  • Nitrogen-protected continuous brazing: Joins tubes, fins, and headers in a controlled atmosphere for clean, strong joints.
  • Ultrasonic cleaning: Removes residue and particles from the core.
  • Automatic water leak detection: Checks cores for leaks before packing.
Leaks, heater core blockage, and heater core corrosion are common causes of field failures. Clean brazing, clean internal passages, and leak testing address the first two at the factory. Coolant quality inside the vehicle affects the third, so end users should follow the vehicle maker's coolant schedule.

Factory Direct Heater Core Prices & Low MOQ

Factory-direct supply removes middle layers, so you can discuss price based on real specifications. Price depends on:
  • Core size, pipe design, and tank design
  • Material and surface treatment
  • Order quantity and packing method
  • Shipping method and destination
We accept small batch trial orders, so you can test a new item before you buy in volume. We confirm the MOQ and unit price for each item in the quotation. Send your target quantity, and we will propose a practical plan.

Small Batch Trial Production for Non-Standard Heater Cores

Non-standard parts carry risk: a wrong size, a wrong connection, or a failed test. Trial production lowers that risk. You check fitment and performance on a small quantity before you commit to mass production. A trial batch lets you:
  • Verify fitment on your own vehicles
  • Test heat output and leak performance in your workshop
  • Check packaging and labeling
  • Collect end-user feedback
This route suits brand owners who launch a new model, distributors who fill gaps in their catalogue, and project buyers who need replacement parts for older machines.

What Is a Heavy Duty Heater Core and How Does It Work?

A heavy duty heater core is a coolant-to-air heat exchanger built for commercial and off-road vehicles. It works in three steps:
1.Hot engine coolant flows into the core.
2.Heat passes from the coolant through the tubes and fins.
3.The blower moves air across the fins, and warm air enters the cab.
If the core leaks or clogs, heat output drops. Air in the cooling system can cause the same symptom. A heater core air pocket blocks coolant flow until the technician bleeds the system.

Aluminum vs Copper-Brass Heavy Duty Heater Core: Which Is Better?

Neither material wins in every case. The right choice depends on your market and your customers.

Aluminum

  • Lighter weight, which helps shipping and handling
  • Brazed construction that suits repeatable volume production
  • Good heat transfer with a well-designed fin structure
  • Usually replaced, not repaired, after damage

Copper-brass

  • Easier to repair by soldering
  • Heavier than aluminum
  • Common in older vehicle platforms and some replacement markets
Our production focus is aluminum. With either material, old or wrong coolant shortens service life, so check what your end users run before you choose a core.

How to Choose the Right Heavy Duty Heater Core for Your Truck

Use this checklist when you compare suppliers:
1.Match the size, pipe position, and connection to the original part.
2.Confirm the material and coolant compatibility.
3.Ask about leak testing and production equipment.
4.Request a sample before a volume order.
5.Check that the packaging can survive export transport.
6.Review warranty and after-sales terms in writing.
7.Test how clearly the supplier answers technical questions.

What Are the Signs of a Failing Heavy Duty Heater Core?

Your customers will describe failures in simple words. These signs point to a heater core problem:
  • Weak or no heat from the vents while the engine is at normal temperature
  • A sweet coolant smell in the cab
  • White smoke from vents, often coolant vapor from a leaking core
  • A foggy windshield with an oily film
  • Wet carpet on the passenger side
  • A falling coolant level with no visible external leak
Not every cold cab means a bad core. A heater core temperature sensor issue, a stuck thermostat, or trapped air can give the same result. Technicians should rule these out first. A hot inlet hose with a cold outlet hose suggests a blocked core.
For a plain-language guide that you can share with end users, read our article Failing Heater Core Symptoms Every Car Owner Should Know.

Shipping, Warranty & Return Policy for Wholesale Orders

We agree on delivery terms before production starts. A clear order includes:
  • Trade term, such as FOB or CIF, and the destination port
  • Lead time for samples and mass production
  • Carton, pallet, and labeling requirements
  • Payment terms
Our website states a 14-day return and exchange policy. For wholesale contracts, we confirm return and claim procedures in writing. Many buyers search for a heater core with lifetime warranty. We state the exact warranty period and conditions in your quotation, and we do not offer vague promises without written terms.

Request a Quote for Heavy Duty Heater Core Wholesale

Send these details, and we will reply with a clear proposal:
  • Vehicle model and year
  • OEM number, or sample photos with dimensions
  • Target quantity and destination country
  • Special needs, such as surface treatment, packaging, or cold-climate use
Our team can also answer technical questions before you order.

Frequently Asked Questions

Q1. Do you accept small batch orders?
Yes. We support small batch trial production for new items and new customers. We confirm the MOQ for your item in the quotation.
Q2. Can you make a heavy duty heater core from my sample or drawing?
Yes. We develop non-standard products. Send a sample, drawing, or OEM number, and our engineers will review it.
Q3. Which vehicles do you cover?
Our products cover pickup trucks, heavy trucks, cars, agricultural machinery, and engineering vehicles. Send your model details, and we will confirm fitment.
Q4. How do you control quality?
We operate under the ISO/TS16949 quality management system. Our line uses nitrogen-protected brazing, ultrasonic cleaning, and automatic water leak detection.
Q5. Is an aluminum or copper-brass heater core better?
It depends on your market. Aluminum is lighter and suits volume production. Copper-brass is easier to repair. Our production focus is aluminum.
Q6. What warranty do you offer?
We confirm warranty terms in writing for each order. Please ask for the details in your quotation.

Conclusion

Choosing a heavy duty heater core supplier is easier when you compare the same facts: sizes, materials, testing, customization, and terms. Jiangyin Shengfei Radiator combines an experienced technical team, a dedicated factory, and brazing and testing equipment to support OEM, ODM, and small batch needs for trucks, tractors, and engineering vehicles.
Ready to discuss your project? Please contact us for product details, a quotation, samples, or technical support.