Description
Part#: ALL-20132
Manufacturer: Pontiac
Year Range: 89-91
Engine Size: 2.5L - 151ci - L4
Description: 89-91 Pontiac 2.5L 151ci L4 VIN(E) - 642 Cylinder Head
This Cylinder Head has a core charge of $100.00 included in the cost. This charge is FULLY REFUNDED upon return. We will include a prepaid label for the return freight.
Introducing the 89-91 Pontiac 2.5L 151ci L4 VIN(E) - 642 Cylinder Head, a meticulously crafted component designed to exceed OEM specifications and elevate the performance of your Pontiac vehicle. Developed by Pontiac, this cylinder head is engineered with precision and expertise, ensuring unrivaled quality, reliability, and durability.
Tailored specifically for Pontiac models manufactured between 1989 and 1991, featuring an engine size of 2.5L - 151ci - L4, our cylinder head, identified by Part# ALL-20132, stands as a testament to superior craftsmanship and engineering excellence.
We stress the importance of testing each cylinder head undergoes a rigorous testing process to not only meet but surpass industry standards. Our commitment to quality extends to every aspect of production, ensuring that whether you're restoring a classic Pontiac or seeking to enhance the performance of your vehicle, our cylinder head delivers exceptional results and prolonged longevity.
Engineered with advanced technology and constructed using top-tier materials, our cylinder head boasts a superior combustion chamber design, optimized airflow, and enhanced fuel efficiency. Every component undergoes meticulous inspection, refurbishment, and testing, guaranteeing peak performance and reliability.
Central to our operation is our unwavering commitment to ensuring customer satisfaction. From the moment of purchase through to installation, our foremost priority is providing a seamless experience for our valued customers. Our team of knowledgeable professionals stands ready to assist with any inquiries or issues pertaining to our cylinder head products. We strive to empower you with the information needed to make well-informed decisions and to facilitate a hassle-free installation process, ensuring your utmost satisfaction.
With our cylinder head, you can upgrade your Pontiac's performance with confidence, backed by quality craftsmanship, reliability, and unmatched performance. Get ready to feel the change yourself and take your driving adventure to a whole new level.
For those seeking additional options, our Pontiac Cylinder Heads collection offers a range of choices to suit your vehicle's needs. Whether you're seeking enhanced performance or original equipment manufacturer (OEM) replacements, our wide array of options guarantees that you'll discover the ideal fit for your Pontiac. Should you have any questions or need additional assistance regarding our cylinder heads, feel free to contact our knowledgeable support team. We're dedicated to assisting you in selecting the best option for your vehicle.
In conclusion, the 89-91 Pontiac 2.5L 151ci L4 VIN(E) - 642 Cylinder Head is a testament to quality craftsmanship, precision engineering, and unwavering dedication to customer satisfaction. Crafted to surpass expectations and provide unmatched performance, this cylinder head epitomizes the epitome of automotive parts. Enhance your Pontiac with assurance and witness the remarkable difference firsthand.
If assistance is required or you have questions, please contact our expert support team through our contact form, call 866-766-9955, or email us at sales@alliedmotorparts.com. We're here to help you every step of the way. Check out our blog section to learn about cylinder heads.
Compatible Vehicle
| MAKE | MODEL | YEAR | ENGINE |
|---|---|---|---|
| Chevrolet | S10 | 1989-1991 | 2.5L 2474CC 151Cu. In. l4 GAS OHV |
Not sure this is your casting? Call 866-766-9955 with your casting number and your vehicle's year, make and engine, and we'll confirm it before you buy.
Process & Warranty
Cylinder Head Rebuilding Process
1. Initial Inspection: As a unit comes to our shop, we give it an initial inspection to determine whether there is any reason the head should not proceed to rebuilding. This quickly catches problems such as cracks, casting damage and other conditions that would halt the process for that casting.
2. Teardown: The cylinder head is fully disassembled, which reveals other areas of potential damage to the casting. The parts and the head are separated and go through different cleaning processes.
3. Cleaning: Cast iron heads are cleaned in a thermal cleaning system — baked at 600° to reduce grease and oil to ash, then put through a steel-shot machine for a brilliant finish. Aluminum heads are baked at a lower temperature or put through a high-pressure wash, then glass-beaded.
4. Head Inspection: After cleaning, heads are pressure tested or Magnafluxed to find any cracks. All bolt holes, valve guides, valve seats and other areas are inspected for broken bolts, broken taps, cracked guides and other impairments. Straightness and cam bore wear are also checked.
5. Machining: All heads have guides installed to meet OE conditions and are resurfaced to far exceed factory specifications for surface finish. A three-angle valve job achieves valve seat runout under .001". Valves are ground for a perfect seal between valve and seat.
6. Assembly: New OE-style valve guide seals are installed. Springs are tested for proper seat pressure. Valve seat sealing is vacuum-checked for an airtight fit. Lifters are bled and rebuilt for zero lash after startup. Cams are polished and clearances are checked twice to meet OE oil clearances.
7. Final Inspection: Every head is visually inspected — surface finish, lash, bolt holes and all other areas — to ensure a quality cylinder head.
Questions about our cylinder head services? Call 1-866-766-9955.
Warranty — 12 months from purchase
Match the head before installation. We will not warranty an incorrectly installed head. Call us immediately with any questions or concerns about your purchase.
First 3 months:
- Repair or replacement of the cylinder head.
- Gasket set supplied for reinstallation.
- Labor calculated from book time at $25.00 per hour, up to a maximum of 10 hours.
- Replacement of fluids and filters.
Remaining 9 months:
- Repair or replacement of the cylinder head.
- Gasket set supplied for reinstallation.
- Replacement of fluids and filters.
- No labor is covered.
Warranty is void if:
- The head was improperly installed.
- The head was overheated (heat tab melted or missing).
- The head received insufficient oiling.
- The cooling system operated improperly.
Warranty returns must be sent to Allied Motor Parts uncleaned and fully assembled — any disassembly voids the warranty — and must be accompanied by proof of purchase. There is no warranty on threaded bolt holes after installation.
This warranty is in lieu of any other warranty, expressed or implied, including any implied warranty of merchantability or fitness for a particular purpose.
Quality Assurance
Here’s why our cylinder heads stand out:
Thorough Inspection: Every head undergoes a complete teardown, cleaning, and detailed inspection for cracks and imperfections.
Advanced Cleaning: Thermal cleaning for cast iron and high-pressure washing for aluminum ensures a brilliant finish.
Precision Machining: CBN resurfacing, triple-angle valve cuts, and guide installations exceed OEM specifications.
Rigorous Testing: Vacuum tests, tension checks, and pressure tests guarantee performance and durability.
High-Quality Components: New seals, plugs, and rebuilt lifters ensure optimal functionality.
Final Assurance: Each head is inspected, stamped, and stored in a climate-controlled environment.
Wide Availability: Over 2,000 cylinder heads for all makes and models, ready for repair or exchange.