Description
Product Overview
The Remflex 2003 square port exhaust gasket is engineered for Chevrolet V8 engines (396, 402, 427, 454) produced between 1965 and 1990. Crafted from precision‑machined metal, the gasket measures 1‑13″ wide by 1‑7/8″ high, matching the Fel‑Pro 1410 port configuration. Its robust construction resists heat‑induced shrinkage and eliminates rubber binders, ensuring a lasting seal that maintains exhaust system integrity.
Usage
Designed for both stock manifolds and aftermarket headers, this gasket is ideal for performance upgrades, restoration projects, and routine maintenance. It fits seamlessly on stock ports, manifolds, or custom headers, providing a reliable seal in high‑heat environments. 
Why Choose Us
Remflex gaskets are built without composite materials, preventing hardening or cracking over time. The thick, compressible metal design fills flange gaps caused by warping, eliminating the need for repeated bolt retightening. Backed by a 4.5‑star rating from 58 verified customers, this gasket delivers consistent performance and peace of mind.
Key Features
- Precision‑machined metal for superior heat resistance
- Exact 1‑13″ x 1‑7/8″ square port fit for Chevy V8 engines
- No rubber binders – maintains flexibility and seal integrity
- Compatible with stock manifolds and aftermarket headers
- Eliminates the need for frequent flange bolt retightening
FAQ
Will this gasket fit a 454 cubic inch V8?
Yes, the 2003 model is designed for Chevrolet V8 engines ranging from 396 to 454 cubic inches, covering model years 1965‑1990.
Can I use this gasket with aftermarket headers?
Absolutely. The gasket’s square port dimensions match standard header ports, making it suitable for both stock and performance headers.
Is there a risk of the gasket cracking under high heat?
No. The gasket is made from high‑grade machined metal that resists heat‑induced cracking and does not contain rubber that can harden over time.
Do I need to replace the bolts when installing this gasket?
Existing bolts can be reused, but ensure they are clean and torqued to the manufacturer’s specifications for optimal sealing.
How does this gasket compare to Fel‑Pro 1410?
The port configuration is comparable, but Remflex’s all‑metal construction offers superior durability and eliminates the shrinkage issues associated with composite gaskets.
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