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Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
Welcome Offer : Use Code WELCOME5 for 5% OFF!
Free Shipping on Most USA Orders
⚠️ California Proposition 65 Warning : Some products sold on this website may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, visit www.P65Warnings.ca.gov.
Give your B-series swap a compact, one-piece exhaust upgrade. The SPDZ1 SZY-065 Big-Tube 4-2-1 Tri-Y Header combines stepped runners, a 2.5-inch collector and 304 stainless steel in a welded assembly for naturally aspirated B-series builds.
Designed for B-Series Swap Builds
The four runners merge into two secondary pipes before meeting at a single collector. This Tri-Y layout is aimed at low-to-mid-range response, while the short-tube routing helps manage engine-bay space and ground clearance. Actual power and clearance depend on your engine, mounts, chassis and exhaust setup.
Key Features
4-2-1 Tri-Y layout with stepped tubing
One-piece welded construction without a slip-fit joint between header sections
18-gauge 304 stainless steel with a polished finish
2.5-inch collector with a flanged outlet
CNC-machined cylinder-head flange, approximately 0.38-inch thick
Compact routing for B-series swap applications
Designed to accommodate air conditioning and power steering
Application & Fitment
Intended for Honda/Acura B-series swap builds using B16, B18 or B20 engine configurations, including built combinations within the reference application range of 1.6–2.2L. This is a swap-specific header: engine family alone does not establish chassis fitment.
Confirm your cylinder-head flange, engine-mount position, oil-pan and subframe clearance, collector location and exhaust connection before ordering. This listing does not establish universal bolt-on fitment for every Civic, Integra, CRX or Del Sol, and does not cover H22/H2B applications.
What’s Included
One SPDZ1 SZY-065 one-piece 4-2-1 header assembly
Cylinder-head gasket and collector sealing gasket shown in the product photos
Sold as one header set. Product photos show the supplied header and gaskets.
Installation Notes
Professional installation is recommended. Match the collector flange to your existing exhaust; fabrication or an adapter may be required. Confirm oxygen-sensor placement and wiring needs for your build. No fixed horsepower gain or factory-exhaust connection is guaranteed. EF and DA chassis may require front crossmember trimming or aftermarket traction bars for clearance. Radiator fan or shroud modifications may be necessary depending on the vehicle.
SPDZ1 Product Warranty Registration
Purchased an SPDZ1 product from Speedzone? Register your SPDZ1 product here using the first name, last name, and order number from your purchase.
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Is the shipping free?
Yes, we offer free standard shipping on all orders within the United States.
When will I receive my item?
Domestic orders typically arrive within 3-5 business days. Delivery times are estimated and may vary depending on your location, weather conditions, or other unforeseen factors.
Can I change or return my item?
We hope you love your purchase, but if you need to make a change or return your item, we’ve got you covered! You can initiate a return or exchange within 30 days of receiving your order. Please ensure the product is in its original condition and packaging. For more information on our return policy, please visit our Returns & Exchanges page.
