4b11 Exhaust Manifold – High‑Quality OEM/ODM Casting for U.S. OEMs
Eliminate high‑price, low‑quality risks for diesel‑engine manufacturers, fleet operators, and aftermarket distributors.
Get Free Quote in 24 hWhy Your Production Line Needs a Better 4b11 Exhaust Manifold
- High purchase price – Imported units often exceed $150 each, eroding profit margins.
- Inconsistent material quality – Cracks under thermal cycling cause warranty claims up to 12 %.
- Long lead‑times – 6‑8 weeks from order to delivery slows assembly lines.
- Limited OEM/ODM flexibility – Standard designs cannot meet specific engine‑bay constraints.
Result: Production delays, higher after‑sales costs, and lost market share.
Hebei Yuanda’s 4b11 Exhaust Manifold Solution
Core Advantages
- Factory‑direct pricing – From $68 / piece (30 % lower than average market price).
- ISO 9001 & RoHS certified – Guarantees consistent mechanical properties.
- OEM/ODM design support – CAD, CFD, and rapid prototyping within 10 days.
- High‑speed delivery – 15‑day air freight for stocked SKUs; 30‑day sea freight for custom runs.
- Lifetime technical assistance – Dedicated engineers for installation and performance tuning.
Technical Specification
| Parameter | Specification |
|---|---|
| Model | 4b11 |
| Material | High‑strength gray cast iron (GJL‑250) / 304 stainless steel (optional) |
| Casting Process | Sand casting – high‑precision pattern, ≤0.2 mm tolerance |
| Operating Temperature | Up to 950 °C (continuous) |
| Weight | 12.5 kg ± 0.15 kg |
| Surface Finish | Roughness Ra ≤ 1.6 µm (machined) |
| Certification | ISO 9001, CE, RoHS, CCC, ISO 14001 |
Application Scenarios & Case Studies
Our 4b11 exhaust manifolds are deployed in:
- Heavy‑duty diesel trucks (200–400 hp)
- Marine auxiliary engines (150 kW)
- Construction equipment (excavators, loaders)
- Aftermarket performance upgrades for fleet vehicles
4g63-exhaust-manifold engine-exhaust-manifold-casting
Case Study – Midwest Truck Corp. Switched from a $170 imported manifold to our $72 unit, cutting part cost by **58 %** and reducing warranty claims from 9 % to 2 % within six months.
Trusted By Industry Leaders
“Switching to Yuanda’s 4b11 manifold reduced our per‑unit cost by **$45** and eliminated the recurring cracking issue. Delivery was on‑time, and the technical team helped us redesign the flange for a tighter fit.” – James L., Procurement Manager, Midwest Truck Corp.
Certificates & Compliance: ISO 9001, ISO 14001, CE, RoHS, CCC, VDE, GS, CB, SAA, FDA (for marine use)
Frequently Asked Questions about 4b11 Exhaust Manifold
What is the minimum order quantity (MOQ) for the 4b11 exhaust manifold?
The standard MOQ is **500 pieces** for the gray‑cast iron version. For stainless‑steel or special alloys, the MOQ is 200 pieces.
Can you provide OEM/ODM design services for custom flange patterns?
Yes. Our R&D team offers free CAD modeling and CFD analysis. Prototypes are delivered within 10 days, and full production can start after design approval.
What are the payment terms for U.S. buyers?
30 % T/T deposit + 70 % balance against copy of Bill of Lading, or L/C at sight. PayPal and credit‑card options are available for samples.
How long does shipping take to the United States?
Air freight: 5‑7 business days (express). Sea freight: 25‑30 days port‑to‑port. We handle customs clearance and can deliver to your warehouse.
Do you offer a warranty or after‑sales support?
All manifolds carry a **12‑month warranty** against material defects. Our after‑sales team provides on‑site troubleshooting within 48 hours of request.
Limited‑Time Offer: 5 % Discount on First Order + Free Sample
Stock is limited to 2,000 units per month. Secure your price advantage today.
Request Quote & Free SampleOr call +86‑311‑808‑126‑83 / WhatsApp +86 19333738338 (Ben) / +86 19333736198 (Linda)
What Our Customers Say
- Maria S., Operations Manager, GreenFleet USA – “The 4b11 manifold arrived in 12 days, perfectly machined. We saw a 32 % reduction in engine‑overheat incidents.”
- David K., Procurement Lead, NorthStar Marine – “Custom stainless‑steel version met marine‑grade standards on the first run – zero re‑work.”
- Lisa T., CEO, PowerDrive Solutions – “Competitive pricing allowed us to launch a new diesel‑engine line three months ahead of schedule.”
About the Author
Michael Chen, Senior Casting Engineer – Hebei Yuanda Trade Co., Ltd.
With 18 years in high‑pressure metal casting, Michael has overseen >30,000 tons of exhaust‑system production for OEMs in North America and Europe. He holds a Master’s in Metallurgical Engineering (Tsinghua University) and is a certified ISO 9001 auditor.
Eliminate high‑price, low‑quality risks for diesel‑engine manufacturers, fleet operators, and aftermarket distributors. Result: Production delays, higher after‑sales costs, and lost market share. Discover how we solve these issues → Our 4b11 exhaust manifolds are
