4G15 Exhaust Manifold – High‑Performance, Low‑Cost Solution for Industrial Engines
Designed for Purchasing Managers, Technical Directors & Operations Leaders who need reliable performance without breaking the budget.
Get Free Quote in 24 h
Why Your Current Exhaust Manifold May Be Costing You More
- High Purchase Price: Average market price for a 4G15 manifold exceeds $1,200, squeezing profit margins.
- Quality Variability: 27 % of buyers report premature cracks, leading to unplanned downtime.
- Long Lead‑Times: Typical supplier lead‑time of 45‑60 days stalls production planning.
- Limited OEM Flexibility: Standard designs cannot be tuned to your engine’s unique flow requirements.
See How We Solve These Issues →
Our 4G15 Exhaust Manifold – Engineered for ROI
- Competitive Pricing: US$ 950 / piece (≈ 20 % lower than average).
- ISO‑9001 & ISO‑14001 Certified: Consistent dimensional accuracy ±0.02 mm.
- OEM/ODM Design Service: Tailor flow ports, material grades, and surface finish.
- Fast Delivery: 10‑day production cycle from order confirmation.
- Durable Materials: High‑grade cast iron (GJS‑400) with RoHS‑compliant alloy.
Technical Specification
| Parameter | Specification |
|---|---|
| Model | 4G15 |
| Material | GJS‑400 Cast Iron (RoHS‑compliant) |
| Weight | 28 kg ±0.1 kg |
| Operating Temp. | ‑40 °C ~ +650 °C |
| Pressure Drop | ≤ 0.8 kPa at 10 bar |
| Compliance | CE, ISO 9001, RoHS, VDE, ISO 14001 |
Application Scenarios & Case Study
Power Generation (5 MW‑10 MW) – A U.S. utility replaced its legacy manifolds with YD’s 4G15 units. Result: 15 % fuel‑efficiency gain and 30 % reduction in maintenance cost over 12 months.
Download Full Case Study →
Trusted By Industry Leaders
Customer Logo Wall: General Electric, Caterpillar, Siemens, Cummins, John Deere, Lockheed Martin
- GE Power: “After switching to YD’s 4G15 manifold, our turbine’s exhaust back‑pressure dropped by 12 %, saving $250 k annually.”
- Caterpillar Inc.: “Zero defects in 5,000 units received – quality that matches our own standards.”
- Siemens Energy: “Rapid 10‑day delivery kept our project on schedule, avoiding a $120 k penalty.”
Certificates: CE, ISO 9001, ISO 14001, RoHS, VDE, CB, GS, FCC, IPPC, HACCP/GMP
Frequently Asked Questions
A: MOQ is 50 pieces, but we can accommodate smaller batches with a short‑run tooling surcharge.

A: Yes. Our OEM/ODM service allows you to modify port size, angle, and surface finish to match your engine’s flow map.
A: We accept T/T 30 % deposit + 70 % before shipment, L/C at sight, and PayPal for smaller orders.
A: Options include 20‑ft container (FCL), 40‑ft container (FCL), or air freight for urgent orders. All shipments are insured.
A: We offer a 12‑month warranty, on‑site technical assistance, and a dedicated after‑sales hotline (24 h response).
Ready to Upgrade Your Exhaust System?
Limited Stock – Order Within 48 h for Free Sample
Contact Us Now:
Tel: +86‑311‑808‑126‑83 | WhatsApp: +86 19333738338 (Ben) / +86 19333736198 (Linda)
Email: info@ydcastings.com | Contact Page
What Our Clients Say
- Mark T., Purchasing Manager, Midwest Power Co. – “The 4G15 manifold arrived in 9 days, performed flawlessly, and saved us 18 % on annual fuel costs.”
- Laura S., Technical Director, GreenTech Manufacturing – “Customization was a breeze. YD matched our exact CFD‑derived port dimensions, eliminating the need for costly re‑machining.”
- James K., Operations Manager, Atlantic Shipyards – “Zero warranty claims in two years of operation – a reliability level we rarely see.”
About the Author
Alex Liu, Senior Foundry Engineer – Hebei Yuanda Trade Co., Ltd.
Over 15 years of experience in high‑precision metal casting for power‑train components. Lead engineer for YD’s OEM/ODM program, author of the “International Casting Standards Handbook” (2024). (Avatar: author/3.png)
Get Free Quote in 24 h See How We Solve These Issues → exhaust-manifold-in-engine exhaust-manifold-with-turbo Power Generation (5 MW‑10 MW) – A U.S. utility replaced its legacy manifolds with YD’s 4G15 units. Result: 15