CADILLAC 306-01868L Driver Left Cylinder Head 3.2L

( Part Type: Driver Cylinder Head ), ( Conditions Options: Lh, 3.2 ), ( Genuine Oem: Yes ), ( Ipn: 306-01868l ), ( Placement: Driver/left )

Review CADILLAC Driver Left Cylinder Head 3.2l Vin fits CTS 2003–2004

The **Cadillac 306-01868L Driver s Side Cylinder Head** for the **3.2L Northstar V8 engine** (found in the **2003 2004 Cadillac CTS**) is a meticulously engineered component designed to deliver the high-performance reliability synonymous with Cadillac s legendary Northstar powertrain. This precision-machined aluminum cylinder head is engineered to house the engine s dual overhead camshaft (DOHC) system, featuring four valves per cylinder (two intake and two exhaust) for optimized airflow and enhanced combustion efficiency. The head incorporates advanced features such as **intake and exhaust ports** contoured for superior velocity and turbulence, ensuring peak performance and throttle response. The **valve train** includes high-quality **stainless steel valves** and **hydraulic lifters**, eliminating the need for traditional valve adjustments and promoting smooth, consistent operation. The **spark plug bores** are strategically positioned for optimal ignition distribution, while the **camshaft lobes** are precision-ground to maintain precise timing with the crankshaft, contributing to the engine s signature smooth power delivery. This cylinder head is also equipped with **integrated cooling passages** to dissipate heat efficiently, preventing thermal stress and ensuring longevity under high-performance conditions. Whether replacing a worn or damaged head or upgrading for enhanced performance, this **OEM-quality part** is built to meet Cadillac s exacting standards, ensuring a seamless fit and reliable operation in the 3.2L Northstar engine. Ideal for restoration projects or maintenance work, it combines durability with performance, embodying the refined engineering that defines Cadillac s luxury and power.

### **Pros and Cons of Buying a Cadillac CTS V6 (3.2L) Cylinder Head (Part #306-01868L) for a 2003-2004 Model**

1. **Direct Fitment** The part number **306-01868L** is specifically designed for the **3.2L V6 engine** found in the **2003-2004 Cadillac CTS**, ensuring compatibility without modifications.

2. **OEM Quality** As an original equipment manufacturer (OEM) part, it meets Cadillac s factory specifications, reducing the risk of premature failure or poor performance.

3. **Reliability** The **3.2L V6** in the CTS is a well-regarded engine known for durability, especially when properly maintained. A fresh cylinder head can restore performance and prevent leaks.

4. **Performance Benefits** A properly installed cylinder head ensures proper sealing, cooling, and combustion efficiency, which can improve engine power, fuel economy, and overall drivability.

5. **Prevents Major Failures** If the original head is cracked, warped, or leaking coolant, replacing it prevents catastrophic engine damage (e.g., overheating, seized pistons, or head gasket failure).

6. **Resale Value** Keeping the engine in good condition helps maintain the CTS s value, especially if you plan to sell it later.

7. **Warranty Coverage** If purchased from a reputable dealer or aftermarket supplier, some parts may come with a warranty, providing peace of mind.

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1. **Cost** OEM cylinder heads can be expensive, often ranging between **$500 $1,200 ** depending on labor and additional components (e.g., gaskets, bolts, seals). Aftermarket alternatives may be cheaper but risk quality issues.

2. **Labor-Intensive Installation** Replacing a cylinder head requires **disassembling the engine**, which is a complex job best left to a **mechanic with experience in GM/LS engines**. Time and labor costs can add **$800 $1,500 ** depending on the shop.

3. **Potential Hidden Issues** If the engine has **internal damage** (e.g., bent valves, worn camshafts, or rod bearings), the cylinder head replacement alone won t fix those problems, requiring additional repairs.

4. **Timing Chain/Guide Wear** The **3.2L V6** uses a **timing chain**, which can stretch or jump over time. If neglected, this can cause **valve damage** during head removal/installation, leading to extra costs.

5. **Coolant Leaks & Gasket Failures** Even with a new head, **head gaskets, coolant passages, or freeze plugs** can fail if not properly sealed, leading to future leaks.

6. **Age of the Engine** The **2003-2004 CTS V6** is **nearing 20 years old**, meaning **wear and tear** on other components (e.g., water pump, thermostat, intake manifold gaskets) may need attention.

7. **Aftermarket vs. OEM Trade-offs** While aftermarket heads (e.g., **Performance Auto, JE, or Summit Racing**) are cheaper, they may lack **long-term durability** or proper fitment, risking future issues.

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Replacing the **Cadillac CTS 3.2L cylinder head (306-01868L)** is a **wise investment** if the engine is showing signs of **coolant leaks, overheating, or compression loss**. The **OEM part ensures reliability**, but the **high cost and labor requirements** make it a significant undertaking.

If the engine is **otherwise healthy**, this repair will **extend its life, improve performance, and prevent costly failures**. However, if the **timing chain, water pump, or other components are failing**, it may be more economical to consider a **replacement engine or a different project vehicle**.

For a **long-term solution**, ensure the **timing chain, water pump, and related seals** are inspected and replaced if needed. If the budget is tight, an **aftermarket head with proper gaskets** could be a cost-effective alternative, though OEM remains the safest choice.

- **If the engine is running but has coolant leaks or compression issues** **Proceed with the OEM cylinder head replacement** (306-01868L) and **inspect the timing chain, water pump, and intake manifold gaskets** during the job.

- **If the engine is severely worn or the project is too labor-intensive** **Consider a used replacement engine** (e.g., a **3.6L V6 from a later CTS or SRX**) or a **different vehicle** with lower repair costs.

- **If budget is a concern** **Get quotes from multiple shops** and compare OEM vs. aftermarket options, but **prioritize quality** to avoid future problems.

Ultimately, this repair is **worthwhile for a well-maintained CTS**, but **proper planning and diagnostics** are essential to avoid unexpected expenses.

Details:

Brokered/non-stocked parts ordered specifically for your request. The part has not been altered, modified, disassembled, overheated or damaged. Limited Warranty Coverage. Normal wear and tear from the previous use is expected.

All parts sold as is except expressly provided below. Any bulbs or wiring still attached to the,Tail Light,assemblies are not warranted part of the listing in any way. Labor and Related Costs: This limited warranty does not cover labor, diagnostics, towing, rental car costs, or any other expenses related to the installation, testing, removal, replacement of a part.

Please remember you are purchasing OEM Original Equipment Manufacturer USED parts. The part has not been installed. Steering Columns: All steering columns sold will come without airbags.

Scope: This limited warranty covers defects in the purchased part that render it inoperable or defective within 90-day period. Axles Assemblies: Axle assemblies will not include any brake hardware: Calipers/Rotors/Shoes/Pads/Hoses/Brake Lines. Bumper assemblies DO NOT come with Upper Grilles unless stated. Transmissions: Transmissions will come with the torque converter and all sensors.

Check the Q A section for Business Support. The part is not a custom body cut. The part is not a special order. Dispute Resolution.

Sensors, valve covers, timing covers attached to core short/long blocks are not covered. Exclusions from Limited Warranty. No expedited shipping is available. Convenience Items: Items attached to or included with the part, such as wiring, bulbs, sockets, sensors, coils, distributor caps, spark plugs, water pumps, filters, brake parts, backing plates, hoses, vacuum lines, u-joints, timing belts/components, similar items, are considered convenience items and not covered by this limited warranty.

part #: 306-01868l prices

• $121.49-$449.99

specifications cylinderheapar:

• for models: Cts
• for makes: Cadillac
• for years: 2003-2004
• part type: Driver Cylinder Head
• conditions options: Lh, 3.2
• genuine oem: Yes
• ipn: 306-01868l
• placement: Driver/left

payments cylinderheapar:

• wallet: Apple-pay
• other
• credit card: Discover

seller cylinderheapar:

• # reviews: 44538
• rating: 99.6%
• city: Annandale, Minnesota

returns cylinderheapar:

• time: 30 Days
• policy: Returns Accepted
• paid by: Buyer

general cylinderheapar:

• Car Truck Parts Accessories > Engines Engine Parts > Cylinder Heads
• condition: Used

shipping cylinderheapar:

• class: Standard
• transit: 3-6 Days
• cost: $65.00
• service: Standard
• type: Fixed

offer cylinderheapar:

• options: Ship-to-home
• sold: 0
• started: March 18, 2026
• availability: In Stock
• quantity: 1

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