Does this come with a seal / gasket? Or is that purchased separately?

No it does NOT come with the seal/gasket You need to buy it separately

how would i kow if this needs a change?

I had a P0011 error code. Initially I could reset and it would stay off for a couple months. Eventually it would come back at first startup. Replaced the phaser and all is good now.

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⚙️ Upgrade your engine’s heartbeat with genuine precision!

SEAMLESS REPLACEMENT - Direct OEM replacement part designed to integrate effortlessly with your GM vehicle’s original components.
OPTIMIZED PERFORMANCE - Helps maintain perfect camshaft phaser positioning for smoother engine operation and efficiency.
DURABILITY YOU CAN TRUST - Built with GM-recommended materials ensuring long-lasting reliability under all driving conditions.
GENUINE GM QUALITY ASSURANCE - Backed by GM Genuine Parts and ACDelco craftsmanship for peace of mind and peak vehicle performance.
PRECISION ENGINEERED FOR YOUR GM - Manufactured to exact GM OE specs for flawless fit, form, and function.

The GM Genuine Parts 12653140 Cylinder Head is a GM OE-spec camshaft magnet designed to ensure optimal camshaft phaser positioning. Manufactured by ACDelco, this durable, precision-fit replacement part guarantees reliable performance and seamless integration with your GM vehicle’s original components.

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Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

HK$670

Duties & taxes incl.

Hong Kongstore

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Brand	GM GENUINE PARTS
Shape	Round
Number of Pieces	1
Manufacturer	ACDelco
UPC	808709736196
Global Trade Identification Number	00808709736196
Model	12653140
Item Weight	10.7 ounces
Product Dimensions	6.5 x 4.2 x 4.2 inches
Item model number	12653140
Exterior	Painted
Manufacturer Part Number	12653140
OEM Part Number	12653140

GM Genuine Parts 12653140 Cylinder Head

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