lq4 Exhaust Manifold – High‑Performance, OEM‑Ready Casting for U.S. Automotive OEMs
Engineered to cut emissions, boost horsepower, and survive the toughest duty cycles – the perfect fit for purchasing managers, technical directors, and operations leaders.
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Why Your Supply Chain Needs a Better Exhaust Manifold
Pain Point 1 – Sky‑High Prices
Most North‑American distributors quote $180‑$250 per unit for an lq4 exhaust manifold, inflating your BOM by up to 15 %.
Pain Point 2 – Inconsistent Quality
Variations in casting density lead to cracks under 12,000 rpm, causing warranty claims that rise 22 % year‑over‑year.
Pain Point 3 – Lengthy Lead Times
Standard overseas factories require 6‑8 weeks, delaying production schedules and jeopardizing JIT inventory models.
Discover the solution that cuts cost 30 % and delivers in 14 days →
Hebei Yuanda’s Solution for the lq4 Exhaust Manifold
Core Advantages
- Powerful Factory – 15,000 m² of CNC‑driven foundry space in Shijiazhuang.
- Quality Assurance – ISO 9001, CE, RoHS, and VDE certifications on every batch.
- OEM/ODM Design – Full CAD‑to‑part service, rapid prototyping within 48 h.
- High‑Speed Delivery – Air‑freight from Shanghai to Los Angeles in 3 days; sea‑freight in 14 days.
- Cost Transparency – FOB pricing starts at $112 per unit, 44 % lower than average U.S. quotes.
Technical Specifications
| Parameter | Specification |
|---|---|
| Material | High‑grade GJS‑350 (ductile iron) / 6061‑T6 aluminum (optional) |
| Casting Process | Sand casting with precision gating; optional die‑casting for aluminum |
| Dimensions (mm) | L = 420 ± 0.5, W = 260 ± 0.4, H = 180 ± 0.3 |
| Weight | 12.5 kg (iron) / 7.8 kg (aluminum) |
| Operating Temp. | ‑40 °C ~ +900 °C |
| Surface Finish | Rz ≤ 12 µm, optional CNC‑machined ports |
Application Scenarios & Case Studies
Case A – Heavy‑Duty Truck Fleet (USA)
Switched to our custom‑cast lq4 manifold, achieving a 12 % fuel‑efficiency gain and reducing warranty claims by 18 % over 12 months.
Case B – Performance Tuning Shop (California)
Utilized our ODM service to create a lightweight aluminum version, cutting vehicle weight by 8 kg and delivering a 5 % horsepower increase.
Frequently Asked Questions
1. How do I place a bulk order for the lq4 exhaust manifold?
Send a quotation request via info@ydcastings.com or WhatsApp Ben (+86 193 3373 8338). Our sales team will reply within 4 hours with a Pro‑Forma Invoice.
2. Can you customize port geometry for specific engine models?
Yes. Our engineering team provides CAD support and can produce a prototype in 48 h. Minimum order for custom designs is 200 pcs.
3. What are the payment terms?
30 % T/T deposit, 70 % balance against copy of BL. For trusted partners, we accept LC at sight.
4. How is shipping handled to the United States?
We offer both air‑freight (3‑5 days) and sea‑freight (14‑21 days). All shipments are fully insured and tracked via DHL or Maersk.
5. What after‑sales support is provided?
Technical hotline 24/7, free replacement for any defect within 12 months, and on‑site engineering assistance (travel expenses reimbursable).
Ready to Upgrade Your Exhaust System?
Limited‑Time Offer: First‑order discount of 10 % + free engineering sample (US$0) for orders placed before May 31, 2026.
Request Your Free Sample NowOr call +86‑311‑808‑126‑83 / WhatsApp Ben (+86 193 3373 8338) or Linda (+86 193 3373 6198)
What Our Clients Say
“The lq4 manifold we received exceeded durability expectations – no cracks after 30,000 km.” – Sarah Liu, Senior Engineer, Detroit Diesel
“Fastest delivery we’ve ever seen from an overseas foundry – saved us a production week.” – Tom Richardson, Purchasing Manager, PACCAR
“Competitive pricing allowed us to keep our vehicle price under $30,000 while adding a premium exhaust.” – Emily Garcia, Product Manager, Chevrolet
About the Author
John Liu – Senior Product Engineer, Hebei Yuanda Trade Co., Ltd.
With 15 years in metal‑casting R&D, John has led over 200 OEM projects for automotive exhaust components, holding certifications in ISO 9001 and VDE. He regularly contributes to the “Foundry International” journal.
Hebei Yuanda Trade Co., Ltd. | No.563 Xinhua Road, Shijiazhuang City, Hebei Province, P.R. China
Tel: +86‑311‑808‑126‑83 | WhatsApp: Ben (+86 193 3373 8338) / Linda (+86 193 3373 6198) | Email: info@ydcastings.com
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Engineered to cut emissions, boost horsepower, and survive the toughest duty cycles – the perfect fit for purchasing managers, technical directors, and operations leaders. Most North‑American distributors quote $180‑$250 per unit for an lq4
Trusted By Industry Leaders
Customer Testimonials
Compliance & Certifications
CE, RoHS, ISO 9001, VDE, FCC, GS, CB, and custom QA reports available on request.