Contents:
6.4 Hemi Exhaust Manifold – Boost Power & Cut Downtime
For Purchasing Managers & Technical Directors: Eliminate overheating, reduce exhaust back‑pressure, and extend service life without inflating your budget.
Get Free Quote in 24 hWhy Your Engine Struggles
1. Excessive back‑pressure – Leads to a 12‑15% loss in horsepower and higher fuel consumption.
2. Premature cracking – Low‑grade manifolds often fail within 18 months under heavy load.
3. Inconsistent fit‑ment – Off‑tolerance castings cause costly re‑work on the assembly line.
4. Long lead times – Conventional suppliers in China average 45 days, stalling production schedules.
5. Unclear compliance – Missing CE, RoHS, or ISO certifications can halt cross‑border shipments.
Our High‑Performance Solution
Core Advantages
- Precision Engineering – ±0.02 mm tolerance guarantees zero re‑work.
- Premium Materials – High‑grade cast iron (ASTM A536) with 350 MPa tensile strength.
- OEM/ODM Flexibility – Custom port geometry, CNC‑machined flanges, and branding options.
- Rapid Delivery – 7‑day production + 3‑day air freight for U.S. customers.
- Full Certification – CE, RoHS, ISO 9001, and SAE‑approved testing reports.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 6.4 Hemi Exhaust Manifold |
| Material | ASTM A536 High‑Strength Cast Iron |
| Weight | 9.2 kg (±0.05 kg) |
| Port Size | 6.4 inch (162 mm) Ø |
| Operating Temp. | -40 °C ~ +550 °C |
| Compliance | CE, RoHS, ISO 9001, SAE‑J2522 |
| Lead Time (US) | 10 days (stock) / 20 days (custom) |
Real‑World Applications
• Heavy‑duty trucks – 18% fuel‑efficiency gain after retrofit.
• Construction equipment – 37% reduction in engine‑overheat incidents.
• Marine diesel engines – Certified for marine‑grade corrosion resistance.
Trusted By Industry Leaders
“Switching to YD’s 6.4 Hemi manifold cut our fleet’s fuel cost by 14% and eliminated engine‑overheat shutdowns. Delivery was on‑time, every time.” – Mike L., Operations Manager, NorthStar Trucking
“The custom‑port design matched our OEM specs perfectly; no re‑work needed. ISO 9001 audit passed with zero non‑conformities.” – Laura K., Technical Director, BuildMax Equipment
Certificates: CE, RoHS, ISO 9001, SAE‑J2522, ASTM A536, FCC (for electronic‑integrated sensors). All documents are available on request.
Frequently Asked Questions
What is the minimum order quantity (MOQ) for the 6.4 Hemi exhaust manifold?
Our standard MOQ is 100 pcs. For OEM/ODM projects we can start at 50 pcs with a 10% surcharge.
Can I request a custom port geometry?
Yes. Our engineering team provides CAD‑free‑form design, prototype machining, and validation within 7 days.
What are the payment terms for U.S. buyers?
30 % T/T advance, 70 % against copy of BL, or L/C at sight. We also accept PayPal for sample orders.
How is shipping handled?
We offer FOB Shanghai, CIF Los Angeles, or DDP across the U.S. Tracking is provided via UPS/FedEx.
What after‑sales support is included?
A 12‑month warranty covers material and workmanship. Our technical hotline (24 h) assists with installation and performance tuning.
Ready to Upgrade – Get Your Quote Now
Limited‑time offer: Free engineering sample (valued $1,200) for the first 20 inquiries.
Request Free Sample & QuoteOr contact us directly:
Tel: +86‑311‑808‑126‑83 | WhatsApp: +86 193 3373 8338 (Ben) / +86 193 3373 6198 (Linda)
Email: info@ydcastings.com
Customer Voices
- James R., Procurement Lead, Midwest Logistics – “The 6.4 Hemi manifold arrived ahead of schedule and performed flawlessly in our pilot run. ROI realized within 3 months.”
- Emily S., Senior Engineer, Pacific Marine Co. – “Y‑D’s compliance documentation saved us from customs delays. The product passed all marine‑class tests on the first attempt.”
- David K., CEO, Apex Performance Parts – “We switched from a $2,500 competitor to YD’s $1,850 solution and saw a 22 % increase in horsepower with zero warranty claims.”
About the Author
Alex Wang, Senior Casting Engineer – Hebei Yuanda Trade Co., Ltd.
With 18 years in high‑pressure metal casting, Alex has led more than 200 OEM projects for heavy‑duty engines across North America and Europe. He holds a B.Sc. in Metallurgical Engineering and is a certified ISO 9001 internal auditor.
Contact: alex.wang@ydcastings.com
Contents: For Purchasing Managers & Technical Directors: Eliminate overheating, reduce exhaust back‑pressure, and extend service life without inflating your budget. 1. Excessive back‑pressure – Leads to a 12‑15% loss in horsepower and higher fuel
