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    Genuine Chevrolet 12556291 - Engine Camshaft

    MPN: 12556291
    0.0
    Vehicle Specific
    Check if this part fits your vehicle.
    • $261.95
    Out of stock

    Product Overview

    The Genuine Chevrolet 12556291 Engine Camshaft is engineered to deliver optimal performance and reliability for your Chevrolet vehicle. Designed to meet OE specifications, this camshaft ensures a perfect fit and function, enhancing your engine's efficiency and power output. With the trust of the Genuine Chevrolet brand, you can be assured of its quality and durability. Choose Genuine Chevrolet 12556291 for dependable performance and peace of mind every time you service your vehicle.

    Cross Reference Numbers

    This Genuine Chevrolet 12556291 is equivalent to or replaces the following part numbers:

    Vehicle Compatibility

    • Chevrolet Express 3500 (2001-2002) 8.1 V8
    • Chevrolet Silverado 2500 HD (2001-2006) 8.1 V8
    • Chevrolet Silverado 3500 (2001-2006) 8.1 V8
    • Chevrolet Suburban 2500 (2001-2006) 8.1 V8
    • Chevrolet Avalanche 2500 (2002-2006) 8.1 V8
    • Chevrolet Silverado 2500 HD Classic (2007) 8.1 V8
    • Chevrolet Silverado 3500 Classic (2007) 8.1 V8

    This also fits other applications. Please use the vehicle selector tool to verify fitment.

    Why Choose Newparts.com?

    • Trusted by DIYers and pros for over 15 years
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    Frequently Asked Questions

    What is the function of the Genuine Chevrolet 12556291 Engine Camshaft?

    The Genuine Chevrolet 12556291 Engine Camshaft controls the timing of the engine's intake and exhaust valves, ensuring optimal engine performance and efficiency.

    How do I know if I need to replace my camshaft?

    Common signs that indicate a failing camshaft include poor engine performance, unusual noises, and increased emissions. If you suspect an issue, consider inspecting or replacing your camshaft with the Genuine Chevrolet 12556291.

    What are some symptoms of a faulty camshaft?

    Symptoms of a faulty camshaft may include rough idling, stalling, decreased power, and triggering check engine light codes. If you experience these issues, it may be time to replace your camshaft.

    Are there any Diagnostic Trouble Codes (DTCs) associated with camshaft issues?

    Yes, relevant DTCs for camshaft issues may include P0340, P0341, P0342, and P0343. If you encounter these codes, consider checking the Genuine Chevrolet 12556291 for replacement.

    Where can I purchase the Genuine Chevrolet 12556291 Engine Camshaft?

    You can easily purchase the Genuine Chevrolet 12556291 Engine Camshaft through our website. Order Genuine Chevrolet 12556291 today for a factory-correct replacement that restores safety and performance.

      • Newparts SKU
        2138624
      • Weight
        4.4 lbs
      • Dimensions (L x W x H)
        21.8057 x 3.7031 x 5.1899 in
      • Manufacturer Part #
        12556291
    • Brand
      Genuine Chevrolet
    • Manufacturer
      Genuine Chevrolet
    • MPN
      12556291
    • Part Type
      Engine Camshaft
    • Fitment
      • Fitment Type
        Vehicle Specific
    YearMakeModelSubmodelNotes
    2001ChevroletExpress 3500Base (8.1 V8 GAS)
    2001ChevroletExpress 3500LS (8.1 V8 GAS)
    2001ChevroletSilverado 3500Base (8.1 V8 GAS)
    2001ChevroletSilverado 3500LS (8.1 V8 GAS)
    2001ChevroletSilverado 3500LT (8.1 V8 GAS)
    2001ChevroletSilverado 2500 HDBase (8.1 V8 GAS)
    2001ChevroletSilverado 2500 HDLS (8.1 V8 GAS)
    2001ChevroletSilverado 2500 HDLT (8.1 V8 GAS)
    2001ChevroletSuburban 2500Base (8.1 V8 GAS)
    2001ChevroletSuburban 2500LS (8.1 V8 GAS)
    2001ChevroletSuburban 2500LT (8.1 V8 GAS)
    2006ChevroletSilverado 3500LS (8.1 V8 GAS)Engine: L18
    2006ChevroletSilverado 3500LT (8.1 V8 GAS)Engine: L18
    2006ChevroletSilverado 3500WT (8.1 V8 GAS)Engine: L18
    2006ChevroletSilverado 2500 HDLS (8.1 V8 GAS)Engine: L18
    2006ChevroletSilverado 2500 HDLT (8.1 V8 GAS)Engine: L18
    2006ChevroletSilverado 2500 HDWT (8.1 V8 GAS)Engine: L18
    2006ChevroletAvalanche 2500LS (8.1 V8 GAS)
    2006ChevroletAvalanche 2500LT (8.1 V8 GAS)
    2006ChevroletSuburban 2500LS (8.1 V8 GAS)
    2006ChevroletSuburban 2500LT (8.1 V8 GAS)
    2005ChevroletSilverado 3500Base (8.1 V8 GAS)
    2005ChevroletSilverado 3500LS (8.1 V8 GAS)
    2005ChevroletSilverado 3500LT (8.1 V8 GAS)
    2005ChevroletSilverado 2500 HDBase (8.1 V8 GAS)
    2005ChevroletSilverado 2500 HDLS (8.1 V8 GAS)
    2005ChevroletSilverado 2500 HDLT (8.1 V8 GAS)
    2005ChevroletSilverado 2500 HDWT (8.1 V8 GAS)
    2005ChevroletAvalanche 2500LS (8.1 V8 GAS)
    2005ChevroletAvalanche 2500LT (8.1 V8 GAS)
    2005ChevroletSuburban 2500LS (8.1 V8 GAS)
    2005ChevroletSuburban 2500LT (8.1 V8 GAS)
    2004ChevroletSilverado 3500Base (8.1 V8 GAS)Engine: L18
    2004ChevroletSilverado 3500LS (8.1 V8 GAS)Engine: L18
    2004ChevroletSilverado 3500LT (8.1 V8 GAS)Engine: L18
    2004ChevroletSilverado 3500WT (8.1 V8 GAS)Engine: L18
    2004ChevroletSilverado 2500 HDBase (8.1 V8 GAS)Engine: L18
    2004ChevroletSilverado 2500 HDLS (8.1 V8 GAS)
    2004ChevroletSilverado 2500 HDLT (8.1 V8 GAS)
    2004ChevroletSilverado 2500 HDWT (8.1 V8 GAS)
    2004ChevroletAvalanche 2500Base (8.1 V8 GAS)
    2004ChevroletSuburban 2500LS (8.1 V8 GAS)
    2004ChevroletSuburban 2500LT (8.1 V8 GAS)
    2003ChevroletSilverado 3500Base (8.1 V8 GAS)
    2003ChevroletSilverado 3500LS (8.1 V8 GAS)
    2003ChevroletSilverado 3500LT (8.1 V8 GAS)
    2003ChevroletSilverado 2500 HDBase (8.1 V8 GAS)
    2003ChevroletSilverado 2500 HDLS (8.1 V8 GAS)
    2003ChevroletSilverado 2500 HDLT (8.1 V8 GAS)
    2003ChevroletAvalanche 2500Base (8.1 V8 GAS)
    2003ChevroletSuburban 2500LS (8.1 V8 GAS)
    2003ChevroletSuburban 2500LT (8.1 V8 GAS)
    2002ChevroletSilverado 3500Base (8.1 V8 GAS)
    2002ChevroletSilverado 3500LS (8.1 V8 GAS)
    2002ChevroletSilverado 3500LT (8.1 V8 GAS)
    2002ChevroletSilverado 2500 HDBase (8.1 V8 GAS)
    2002ChevroletSilverado 2500 HDLS (8.1 V8 GAS)
    2002ChevroletSilverado 2500 HDLT (8.1 V8 GAS)
    2002ChevroletAvalanche 2500Base (8.1 V8 GAS)
    2002ChevroletExpress 3500Base (8.1 V8 GAS)
    2002ChevroletExpress 3500LS (8.1 V8 GAS)
    2002ChevroletSuburban 2500LS (8.1 V8 GAS)
    2002ChevroletSuburban 2500LT (8.1 V8 GAS)
    2007ChevroletSilverado 2500 HD ClassicLS (8.1 V8 GAS)
    2007ChevroletSilverado 2500 HD ClassicLT (8.1 V8 GAS)
    2007ChevroletSilverado 2500 HD ClassicWT (8.1 V8 GAS)
    2007ChevroletSilverado 3500 ClassicLS (8.1 V8 GAS)
    2007ChevroletSilverado 3500 ClassicLT (8.1 V8 GAS)
    2007ChevroletSilverado 3500 ClassicWT (8.1 V8 GAS)
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    Warranty Overview

    At Newparts, we stand behind the quality of the products we sell. Every part we offer is backed by a warranty designed to give you peace of mind and protect your investment.

    Standard Warranty – Most Parts

    • Coverage: 2 years or 24,000 miles (whichever comes first) from purchase date.

    • Protection: Defects in materials or workmanship under normal personal use.

    • Eligibility: Applies only to the original purchaser and the vehicle where the part was first installed.

    • Exclusions:

      • Wear-and-tear items (brake pads, filters, bulbs, wipers, etc.)

      • Commercial, fleet, rideshare, off-road, or racing use

      • Improper installation, misuse, accidents, or modifications

    • Not Covered: Labor, shipping, towing, or incidental costs.

    Bison Performance Warranty – Our House Brand

    • Coverage: Limited Lifetime Warranty for as long as you own your vehicle.

    • Applies To: All products sold under the Bison Performance label.

    • Premium Protection: Goes beyond our standard warranty — if it’s a Bison product, the 2-year/24k mile limit is replaced with lifetime coverage.

    • Exclusions: Same as the standard warranty (normal wear, commercial use, improper installation, etc.).

    • What’s Included: Replacement of the defective product (labor and shipping excluded).

    Warranty Claim Requirements

    To keep claims fast and fair, we require:

    • Proof of purchase (invoice or order confirmation).

    • Photos or videos showing the defective part, order number, date, VIN, and odometer reading.

    • Diagnostic reports or part returns for non-visible issues may be requested.

    • Claims must be truthful, properly documented, and reflect normal consumer use.

    Buy With Confidence: We back our products because we believe in their quality, with a transparent, customer-first warranty process you can trust. And with Bison Performance products, you’ll enjoy Limited Lifetime protection—an assurance few brands can match.

    For full details and exclusions, please see our complete Warranty Terms & Conditions.


    This summary is for convenience only. For full warranty coverage details, exclusions, and requirements, see our official Warranty Terms & Conditions. In case of conflict, the full policy governs.

    Return Policy Overview

    Most parts can be returned within 30 days of delivery if unused, uninstalled, and in original packaging.
    To start a return, use our Return Portal or contact support.

    • Restocking fee: Up to 20% may apply for certain orders (buyer’s remorse, order errors, or special-order items)

    • Refunds: Issued to your original payment method within 3–5 business days after inspection

    • Exchanges: Not automatic — please return and reorder

    • Replacements: May be approved for incorrect or defective items reported within 7 days

    Not returnable:

    • Used or installed parts

    • Electrical components

    • Opened filter kits, gaskets, or contaminated items

    • Final sale or custom orders

    Important Notes:

    • Return shipping is your responsibility unless we made a verified error

    • Fitment is the customer’s responsibility (we can assist, but do not guarantee)

    • Country of origin may vary and is not grounds for return

    For complete details, please see our full Return Policy.



    This Returns summary is provided for convenience only. All returns, refunds, and exchanges are subject to the complete Returns Policy. In the event of any conflict, the full policy governs.

    Fast, Reliable Shipping — Straight to Your Door

    We ship most orders the same day when placed before 2 PM CST (Monday–Friday). Our main warehouse is just east of Nashville, TN, and we also ship from multiple locations nationwide to get your order to you as quickly as possible.

    • We use trusted carriers like UPS, FedEx, and USPS.

    • Tracking info is emailed to you as soon as your order ships.

    • Delivery estimates at checkout are based on carrier data, but not guaranteed.

    Need help with a shipment?

    If your order is missing, damaged, or incorrect, just let us know within 5 days of delivery. We’ll walk you through the quick claim process — including a few photos to help us make things right.

    For full details, please see our complete Shipping Policy.


    This Shipping summary is provided for convenience only. Delivery times, carrier terms, fees, restrictions,  risk of loss, and other details are governed by our complete Shipping Policy. In the event of any conflict, the full policy governs.

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