2003 Chevrolet Trailblazer Ext Performance Engines
Keep Your 2003 Chevrolet Trailblazer Ext in Top Shape with Quality Performance Engines
Whether you’re repairing or upgrading your Performance Engine, using high-quality parts is key to keeping your 2003 Chevrolet Trailblazer Ext looking sharp and performing at its best. At Advance Auto Parts we carry a wide selection of dependable options, including Performance Engine Camshaft and Lifter Kits, Performance Engine Rocker Arms, and Performance Engine Coolant Thermostats. Whether you’re replacing a damaged part or enhancing your truck’s style and protection, you’ll find exactly what you need to get the job done right.
Competitive Prices and Extensive Inventory
The average price for a 2003 Chevrolet Trailblazer Ext Performance Engine at Advance Auto Parts is around $657.66, with a range that starts at $8.99 and goes up to $1,870.00. With 21 options in stock from 3 trusted brands, finding the right fit is easy. Popular picks like Ls1 Late Thermostat, XFI XE-R 232/234 Hydraulic Roller Cam, and XFI RPM HI-LIFT 212/218 Hydraulic Roller Cam start at just $37.99 and offer a great balance of form and function.
Explore Related Parts
While you’re upgrading or replacing your Performance Engine, don’t forget to check out other key components like Performance Air Filters and Performance Air Intake Kits. At Advance Auto Parts, we’re here to help you keep your 2003 Chevrolet Trailblazer Ext in peak condition, inside and out.
Find Your Specific 2003 Chevrolet Trailblazer Ext Performance Engines
Looking for the perfect Performance Engine for your 2003 Chevrolet Trailblazer Ext? You’re in the right place. Below, you’ll find links to various types of Performance Engines that fit your vehicle. At Advance Auto Parts, we offer only the highest quality OEM and aftermarket Performance Engines, ensuring durability and a precise fit for your Chevrolet Trailblazer Ext. Whether you’re driving a 2003 model or another popular model year like
2002,
2004,
2005, and
2006, we’ve got you covered. Purchasing Performance Engines from Advance Auto Parts is a smart choice, giving you access to trusted brands and parts built to perform. Below, you’ll find links to various types of Performance Engines that fit your vehicle.
Essential 2003 Chevrolet Trailblazer Ext Performance Engines
Mr. Gasket – Ls1 Late Thermostat (Part No.6367)
from
$37.99
Designed to open at 160 degrees every time, regardless of engine rpm, and it’s high-flow design and brass and copper construction eliminate the damaging effects of cycling when you’re stuck in stop-and-go traffic. It includes the rubber gasket and has a pressure relief valve.
Product Features:
See More
Product Features:
- Opens sooner than stock at 160 degrees
- High flow design for performance applications
- Includes rubber o-ring seal/gasket
- Incorporates pressure relief valve
Competition Cams – XFI RPM 212/218 Hydraulic Roller Cam (Part No.54-412-11)
from
$541.99
Designed to take advantage of the GM LS engine’s larger camshaft journal diameter, the XFI RPM camshaft line takes Xtreme Energy technology to deliver excellent power.
Product Features:
See More
Product Features:
- Designed with Xtreme Energy technology to provide excellent power with the LS engine’s enhanced cylinder head design and high RPM potential.
- Takes advantage of the LS engine’s larger journal diameter, base circle and 1.7+ rocker arm ratio.
- Provides outstanding low RPM torque with increased stability.
Competition Cams – XFI XE-R 224/230 Hydraulic Roller Cam (Part No.54-444-11)
from
$541.99
HYDRAULIC ROLLER – XFI XE-R: High rpm street/strip with XE-R lobe designs. Requires custom tuning.
Product Features:
See More
Product Features:
- HYDRAULIC ROLLER – XFI XE-R: High rpm street/strip with XE-R lobe designs. Requires custom tuning.
- 273/279 Advertised Duration, 224/230 Duration @ .050″, .581″/.588″ Lift, 114 Lobe Separation
- Use Beehive Valve Spring part No. 26918-16 with this camshaft
Competition Cams – XFI RPM HI-LIFT 212/218 Hydraulic Roller Cam (Part No.54-424-11)
from
$541.99
Designed to take advantage of the GM LS engine’s larger camshaft journal diameter, the XFI RPM camshaft line takes Xtreme Energy technology to deliver excellent power.
Product Features:
See More
Product Features:
- Designed with Xtreme Energy technology to provide excellent power with the LS engine’s enhanced cylinder head design and high RPM potential.
- Takes advantage of the LS engine’s larger journal diameter, base circle and 1.7+ rocker arm ratio.
- Provides outstanding low RPM torque with increased stability.
Competition Cams – XFI RPM 216/220 Hydraulic Roller Cam (Part No.54-414-11)
from
$541.99
HYDRAULIC ROLLER – XFI RPM: Great mid-range with superior top end power. Requires tuning.
Product Features:
See More
Product Features:
- HYDRAULIC ROLLER – XFI RPM: Great mid-range with superior top end power. Requires tuning.
- 269/273 Advertised Duration, 216/220 Duration @ .050″, .525″/.532″ Lift, 114 Lobe Separation
- Use Beehive Valve Spring part No. 26915-16 with this camshaft
Competition Cams – XFI XE-R 238/240 Hydraulic Roller Cam (Part No.54-448-11)
from
$541.99
Designed to take advantage of the GM LS engine’s larger camshaft journal diameter, the XFI RPM camshaft line takes Xtreme Energy technology to deliver excellent power.
Product Features:
See More
Product Features:
- Designed with Xtreme Energy technology to provide excellent power with the LS engine’s enhanced cylinder head design and high RPM potential.
- Takes advantage of the LS engine’s larger journal diameter, base circle and 1.7+ rocker arm ratio.
- Provides outstanding low RPM torque with increased stability.
B & M – Tork Master 2000: Value-Priced Street Performance Torque Converter (Part No.70420)
from
$459.99
Similar in performance to the Holeshot series, the Tork Master is B&M’s lowest cost torque converter. The Tork Master is an excellent all-around performance street converter. The best ‘value priced’ street converters available.
Product Features:
See More
Product Features:
- New Precision Pump Drive Tube
- Pressure Tested
- Fully Balanced
- Needle Thrust Bearing
- New Thrust Washer
B & M – Tork Master 2400 (Part No.70418)
from
$483.99
Torque Converter – Tork Master 2400 for GM 1993 to 1996 TH700R4 (30 spline) 1984 to 1993 and 4L60E (30 spline) APPLICATION: Tork Master 2400 for GM 1993 to 1996 TH700R4 (30 spline) 1984 to 1993 and 4L60E (30 spline) The Tork Master is B&M’s lowest cost pe
Product Features:
See More
Product Features:
- New Precision Pump Drive Tube
- Pressure Tested
- Fully Balanced
- Needle Thrust Bearing
- New Thrust Washer
B & M – Torque Converter, Holeshot 3000 (Part No.70421)
from
$921.99
The Holeshot Converter is a very good choice for the typical street machine that is looking for better launch capability and more strength. With a furnace brazed turbine, New turbine hub and dual pattern drive lugs on some GM Holeshots.
Product Features:
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Product Features:
- Furnace Brazed Impeller
- Steel Alloy Pump Drive Tube
- Heavy Duty Needle Bearing
- Between Stator and Turbine
- Furnace Brazed Turbine
Popular 2003 Chevrolet Trailblazer Ext Performance Engines Categories
Most Popular Performance Engine Camshaft and Lifter Kits for 2003 Chevrolet Trailblazer Exts
Enhance your 2003 Chevrolet Trailblazer Ext with one of the 4 Performance Engine Camshaft and Lifter Kits we have in stock, starting at just $1,195.00.
Competition Cams – XFI RPM 212/218 Hydraulic Roller Cam K-Kit for GM LS GEN III/IV (Part No.K54-412-11)
from
$1870.00
XFI RPM 212/218 Hydraulic Roller Cam K-Kit for GM LS GEN III/IV
Competition Cams – XFI RPM HI-LIFT 222/224 Hydraulic Roller Cam K-Kit for GM LS GEN III/IV (Part No.K54-426-11)
from
$1867.00
XFI RPM HI-LIFT 222/224 Hydraulic Roller Cam K-Kit for GM LS GEN III/IV
Competition Cams – XFI RPM 206/212 Hydraulic Roller Cam K-Kit for GM LS GEN III/IV (Part No.K54-408-11)
from
$1195.00
XFI RPM 206/212 Hydraulic Roller Cam K-Kit for GM LS GEN III/IV
Competition Cams – XFI RPM 216/220 Hydraulic Roller Cam K-Kit for GM LS GEN III/IV (Part No.K54-414-11)
from
$1195.00
XFI RPM 216/220 Hydraulic Roller Cam K-Kit for GM LS GEN III/IV
Best-Selling 2003 Chevrolet Trailblazer Ext Performance Engine Rocker Arms
Upgrade your Trailblazer Ext with one of our 2 best-selling Performance Engine Rocker Arms.
Competition Cams – ENGINE ROCKER ARM (Part No.19024-1)
from
$72.99
ENGINE ROCKER ARM
Competition Cams – ENGINE ROCKER ARM (Part No.1675-1)
from
$62.99
ENGINE ROCKER ARM
Top-Quality Performance Engine Coolant Thermostats for 2003 Chevrolet Trailblazer Exts
Choose a high-quality OEM or aftermarket Performance Engine Coolant Thermostat for Chevrolet Trailblazer Exts and enjoy top-notch performance from $37.99.
Mr. Gasket – Ls1 Late Thermostat (Part No.6367)
from
$37.99
Designed to open at 160 degrees every time, regardless of engine rpm, and it’s high-flow design and brass and copper construction eliminate the damaging effects of cycling when you’re stuck in stop-and-go traffic. It includes the rubber gasket and has a pressure relief valve.
Product Features:
See More
Product Features:
- Opens sooner than stock at 160 degrees
- High flow design for performance applications
- Includes rubber o-ring seal/gasket
- Incorporates pressure relief valve
Top Picks for 2003 Chevrolet Trailblazer Ext Performance Engine Camshafts
Invest in one of our 8 durable Performance Engine Camshafts for your 2003 Chevrolet, knowing you’re getting trusted brands and expert craftsmanship.
Competition Cams – XFI XE-R 224/230 Hydraulic Roller Cam (Part No.54-444-11)
from
$541.99
HYDRAULIC ROLLER – XFI XE-R: High rpm street/strip with XE-R lobe designs. Requires custom tuning.
Product Features:
See More
Product Features:
- HYDRAULIC ROLLER – XFI XE-R: High rpm street/strip with XE-R lobe designs. Requires custom tuning.
- 273/279 Advertised Duration, 224/230 Duration @ .050″, .581″/.588″ Lift, 114 Lobe Separation
- Use Beehive Valve Spring part No. 26918-16 with this camshaft
Competition Cams – XFI XE-R 232/234 Hydraulic Roller Cam (Part No.54-446-11)
from
$541.99
HYDRAULIC ROLLER – XFI XE-R: Xtreme Energy XE-R design for standard displacement LS6 and LS1. Race only applications. Custom tuning required.
Product Features:
See More
Product Features:
- HYDRAULIC ROLLER – XFI XE-R: Xtreme Energy XE-R design for standard displacement LS6 and LS1. Race only applications. Custom tuning required.
- 281/283 Advertised Duration, 232/234 Duration @ .050″, .595″/.598″ Lift, 112 Lobe Separation
- Use Dual Valve Spring part No. 26925-16 with this camshaft
Competition Cams – Thumpr 219/233 Hydraulic Roller Cam for GM LS GEN III/IV (Part No.54-600-11)
from
$805.99
Thumpr 219/233 Hydraulic Roller Cam for GM LS GEN III/IV
Competition Cams – LSR Rectangular Port 227/243 Hydraulic Roller Cam for GM LS GEN III/IV (Part No.54-454-11)
from
$805.99
LSR Rectangular Port 227/243 Hydraulic Roller Cam for GM LS GEN III/IV
Competition Cams – XFI RPM 212/218 Hydraulic Roller Cam (Part No.54-412-11)
from
$541.99
Designed to take advantage of the GM LS engine’s larger camshaft journal diameter, the XFI RPM camshaft line takes Xtreme Energy technology to deliver excellent power.
Product Features:
See More
Product Features:
- Designed with Xtreme Energy technology to provide excellent power with the LS engine’s enhanced cylinder head design and high RPM potential.
- Takes advantage of the LS engine’s larger journal diameter, base circle and 1.7+ rocker arm ratio.
- Provides outstanding low RPM torque with increased stability.
Competition Cams – XFI RPM HI-LIFT 212/218 Hydraulic Roller Cam (Part No.54-424-11)
from
$541.99
Designed to take advantage of the GM LS engine’s larger camshaft journal diameter, the XFI RPM camshaft line takes Xtreme Energy technology to deliver excellent power.
Product Features:
See More
Product Features:
- Designed with Xtreme Energy technology to provide excellent power with the LS engine’s enhanced cylinder head design and high RPM potential.
- Takes advantage of the LS engine’s larger journal diameter, base circle and 1.7+ rocker arm ratio.
- Provides outstanding low RPM torque with increased stability.
Competition Cams – XFI XE-R 238/240 Hydraulic Roller Cam (Part No.54-448-11)
from
$541.99
Designed to take advantage of the GM LS engine’s larger camshaft journal diameter, the XFI RPM camshaft line takes Xtreme Energy technology to deliver excellent power.
Product Features:
See More
Product Features:
- Designed with Xtreme Energy technology to provide excellent power with the LS engine’s enhanced cylinder head design and high RPM potential.
- Takes advantage of the LS engine’s larger journal diameter, base circle and 1.7+ rocker arm ratio.
- Provides outstanding low RPM torque with increased stability.
Competition Cams – XFI RPM 216/220 Hydraulic Roller Cam (Part No.54-414-11)
from
$541.99
HYDRAULIC ROLLER – XFI RPM: Great mid-range with superior top end power. Requires tuning.
Product Features:
See More
Product Features:
- HYDRAULIC ROLLER – XFI RPM: Great mid-range with superior top end power. Requires tuning.
- 269/273 Advertised Duration, 216/220 Duration @ .050″, .525″/.532″ Lift, 114 Lobe Separation
- Use Beehive Valve Spring part No. 26915-16 with this camshaft
Performance Engine Push Rod Guideplates for 2003 Chevrolet Trailblazer Exts
Make a smart move for your 2003 Chevrolet Trailblazer Ext with products all priced from $8.99.
Competition Cams – Flat 1 Piece Guide Plate for GM LS with 3/8" Pushrod and 8mm Stud (Part No.4856-1)
from
$8.99
Flat 1 Piece Guide Plate for GM LS with 3/8" Pushrod and 8mm Stud
Competition Cams – Flat 1 Piece Guide Plate for GM LS with 5/16" Pushrod and 8mm Stud (Part No.4854-1)
from
$8.99
Flat 1 Piece Guide Plate for GM LS with 5/16" Pushrod and 8mm Stud
FAQs for 2003 Chevrolet Trailblazer Ext Performance Engines
What are the best-selling Performance Engines for 2003 Chevrolet Trailblazer Exts?
Out of 21 Performance Engines that fit 2003 Chevrolet Trailblazer Exts, the following parts are the top sellers:
- Ls1 Late Thermostat (11151861) – $37.99
- XFI XE-R 232/234 Hydraulic Roller Cam (10322175) – $541.99
- XFI RPM HI-LIFT 212/218 Hydraulic Roller Cam (10214779) – $541.99
What’s the price range for 2003 Chevrolet Trailblazer Ext Performance Engines?
The prices of Performance Engines for the 2003 Chevrolet Trailblazer Ext range from $8.99 up to $1,870.00 for the most premium parts.
What is the average price of a Performance Engine for a 2003 Chevrolet Trailblazer Ext?
The average price for Performance Engines for the 2003 Chevrolet Trailblazer Ext is $657.66. Keep in mind the variety of part types within our Performance Engine category, where you are likely to find a wide range of prices across a variety of parts and components.
Does Advance Auto Parts sell Performance Engines for other Chevrolet Trailblazer Ext model years?
What are the cheapest Performance Engines for my 2003 Chevrolet Trailblazer Ext?
The cheapest 2003 Chevrolet Trailblazer Ext Performance Engines we carry are:
- Flat 1 Piece Guide Plate for GM LS with 3/8" Pushrod and 8mm Stud (50288908) – $8.99
- Flat 1 Piece Guide Plate for GM LS with 5/16" Pushrod and 8mm Stud (50288903) – $8.99
- Ls1 Late Thermostat (11151861) – $37.99
- ENGINE ROCKER ARM (50272408) – $62.99
- ENGINE ROCKER ARM (50272786) – $72.99
Does Advance Auto Parts sell Performance Engines for any other 2003 Chevrolet models?
Yes. We stock Performance Engines for 23 other popular 2003 Chevrolet models. Some of the most popular are 2003 Impala Performance Engines, 2003 Silverado 1500 Performance Engines, 2003 Suburban 1500 Performance Engines, 2003 Monte Carlo Performance Engines, and 2003 Silverado 2500 HD Performance Engines.
What are the top-rated Performance Engines that fit the 2003 Chevrolet Trailblazer Ext?
Based on 12 reviews by customers, our 2003 Chevrolet Trailblazer Ext Performance Engines have an average customer rating of 2 stars. These are the highest-rated categories of Performance Engines for the 2003 Chevrolet Trailblazer Ext and their top-rated products:
- Performance Torque Converters
- Tork Master 2000: Value-Priced Street Performance Torque Converter (17300004) – $459.99
- Performance Engine Camshafts
- XFI XE-R 224/230 Hydraulic Roller Cam (10214928) – $541.99
What types of Performance Engines do you sell for my 2003 Chevrolet Trailblazer Ext?
As of 3/1/26, these are some of the most in-demand types of Performance Engines for a 2003 Chevrolet Trailblazer Ext:
Can I get help with 2003 Chevrolet Trailblazer Ext Performance Engine orders?
Contact our customer support team by chat or phone, through the help desk page, where you can find instant answers about Chevrolet Performance Engines and more.
What is your return policy for Chevrolet Trailblazer Ext Performance Engines?
Advance Auto Parts keeps returns simple. For new Chevrolet Trailblazer Ext Performance Engines and accessories, your online orders can be returned, in their original condition, within 45 days. For requirements, see the returns page.