Engine DIY Promo Codes and Coupons September 2025

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Engine DIY

EngineDIY.com is an online marketplace specializing in automotive parts, tools, and accessories for car enthusiasts and mechanics. They offer a wide range of products from various manufacturers, including OEM and aftermarket parts, with a focus on providing detailed product information and competitive pricing.

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Today's Engine DIY discount codes

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15% off

1 uses
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worked 7 months ago

Take 15% off with discount code
Engine DIY logo

12% off

69 uses
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worked 6 months ago

12% Off Storewide (Minimum Order: $500) at Engine DIY
Engine DIY logo

10% off

1 uses
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worked 8 months ago

10% Off Storewide at Engine DIY
Engine DIY logo

10% off

3 uses
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worked 6 months ago

10% Off Storewide at Engine DIY

Featured Engine DIY Products

CISON Small-block 44CC 1/6 Scale Water-Cooled OHV 4-Stroke V8 Gas Engine Internal Combustion Engine - Build Your Own V8 Engine that Works

CISON Small-block 44CC 1/6 Scale Water-Cooled OHV 4-Stroke V8 Gas Engine Internal Combustion Engine - Build Your Own V8 Engine that Works

CISON Small-block V8 Engine - V8 Engine Model Kit that Works - Build Your Own V8 Engine - 44CC 1/6 Scale Water-Cooled OHV 4-Stroke V8 Gasoline Engine Features: .Introduction: Following the success of CISON's single-cylinder, V2, and L4 engine models, we proudly introduce the Small-block V8, a mini beast that is set to become another classic in the world of scaled engines, impressing enthusiasts with its remarkable features. The V8-440(Flathead) design incorporates elements of the Ford V8, while the V8-440(OHV) draws inspiration from the Chevrolet V8, aiming for a highly realistic appearance. Featuring an exquisite electroplated paint in orange, high-stroke and 4-point supported camshaft, larger intake valves compared to exhaust valves, a 5-point supported crankshaft, reinforced and hardened connecting rods, optional dual cast iron piston rings, independent lubrication system, and a double-layer gear pump water pump, among other features. It's not just a roaring beast on your desk but also a "powerhouse" compatible with RC models, providing enhanced torque and power output..DIY Fun: Crafted with high-precision parts, easy-to-follow assembly instructions for a deep understanding of engine structure and mechanical principles..Highly Realistic: Adopt exquisite electroplated paint for a lifelike engine appearance, suitable for real fuel operation, and provides a location for optional generator installation..Precision Manufacturing: The cylinder is precision machined with 5-axis CNC, repeatability within 0.005mm for better assembly accuracy..Long Stroke: High-angle, high-hardness wear-resistant camshaft, 4-point supported camshaft, larger intake valve, unaffected by temperature changes with low-temperature intake pipe..Crankshaft and Connecting Rods: Reinforced and hardened wear-resistant connecting rods, optional dual cast iron piston rings (oil rings are optional), 5-point supported crankshaft for increased high-speed operational strength and stability..Durable Operation: Equipped with a double-layer gear pump water pump, independent lubrication system, and reserved oil filter installation position. This model in the OHV version can be combined with a rocker arm forced lubrication system with rocker arm lubricant returning to the cylinder block holes, and oil sump with an oil level gauge..Creative Gift: The assembled model is perfect as a collectible desktop engine model or be installed in RC models, as well as a premium model holiday gift. Specifications: .Material: Metal.Brand: CISON.Model: V8-440(OHV).Name: Small-block.Type: KIT Version.Engine Type: Gasoline Internal Combustion Engine.Valve Mechanism Type: OHV.Displacement: 44CC (8*5.5CC).Cylinders: V8.Stroke: 4-Stroke.Bore Diameter: 18.5mm.Stroke Length: 20.5mm.RPM Range: 1500-10000rpm.Power: Approx. 4.8hp.Cooling Method: Water-Cooled.Lubrication Method: Independent Lubrication System.Start Method: Electric Start.Ignition Method: Distributor Ignition (High-Performance CDI Ignition, Frequency 42000).Spark Plug Type: 1/4-32 ME8 Type Spark Plug.Starting Power Source: 6-12V (Recommended 2S-3S Lipo Battery).Fuel Type: Gasoline (Recommended 92# and Above Gasoline).Lubricating Oil Type: 2T Engine Oil (Recommended 10W50 2T Engine Oil).Product Weight: 1700g.Product Dimensions: 14 x 9.3 x 10cm.Package Dimensions: 30 x 20 x 20cm.Package Weight: 2500g.Packing: Gift Box.Ages: 16+

USD 2099.99

V8 Engine Model Kit that Works - Build Your Own V8 Engine - V8 Engine for Capra VS4-10

V8 Engine Model Kit that Works - Build Your Own V8 Engine - V8 Engine for Capra VS4-10

V8 Engine Model Kit that Works - Build Your Own V8 Engine - V8 Engine for Capra VS4-10 RC Full Simulation Engine: V8 internal combustion engine structural principle design, drive structure of belt wheel winding, generator, air conditioning compressor, steering pump, water pump, complete output flywheel and layered cylinder head, cylinder head cover, spiral near and far valve intake manifold, oil pan structure, and power supply drive board plug interface.Model KIT That Works: Product based on pre-color, users need to install. The V8 engine model can simulate the operation with electricity. At the same time, considering the stability and reliability of operation, we made the full bearing structure of the driving part in the mini space.Application: The simulated V8 engine is suitable for a variety of RC models such as AX90104, SCX10, Capra, VS4-10 Pro/Ultra. Installing this engine will make your remote control car unique and powerful, but it is also a great decoration to exercise the ability to assemble and restore the V8 engine.Tips: This engine kit does not contain the bracket, you can choose the corresponding engine bracket according to your model. The engine and the bracket are sold simultaneously.Specifications:.Material: Plastics + Metal + Electronic Components.Product Weight: 700g.Product Dimensions: 6.4 x 6.0 x 5.5cm.Package Dimensions: 15 x 15 x 7cm.Package Weight: 900g.Packing: Graphic CartonPackage Content:1 Set V8 Engine Model Kit

USD 109.99

V8 Engine Model Kit that Works - Build Your Own V8 Engine - Paint Your Own V8 Engine -MAD RC V8 Engine for Capra VS4-10 Pro

V8 Engine Model Kit that Works - Build Your Own V8 Engine - Paint Your Own V8 Engine -MAD RC V8 Engine for Capra VS4-10 Pro

MAD RC V8 Engine Model Kit for AX90104 SCX10โ…ก Capra VS4-10 Pro/Ultra - Original ColorWarm Tips:This V8 engine is in Original Color(no paint), which enables you to paint your own v8 engine. Ps. The main images is painted by designer.ย  Come and get it, and paint your own one!RC Full Simulation Engine:V8 internal combustion engine structural principle design, drive structure of belt wheel winding, generator, air conditioning compressor, steering pump, water pump, complete output flywheel and layered cylinder head, cylinder head cover, spiral near and far valve intake manifold, oil pan structure, and power supply drive board plug interface.Model KIT That Works:Product based on pre-color, users need to install. The V8 engine model can simulate the operation with electricity. At the same time, considering the stability and reliability of operation, we made the full bearing structure of the driving part in the mini space.KIT Components & Dynamic Simulation: The originally painted engine needs to be assembled and painted by yourself for more individual creativity. V8 motor model is capable of sustaining simulated operation by electrifying and is designed with all bearing structure of the driven part in the mini space for stability and reliability in operation.Application:The simulated V8 engine is suitable for a variety of RC models such as AX90104, SCX10, Capra, VS4-10 Pro/Ultra. Installing this engine will make your remote control car unique and powerful, but it is also a great decoration to exercise the ability to assemble and restore the V8 engine.Tips:This engine kit does not contain the stand, you can choose the corresponding engine stand/bracket according to your model. The engine and the bracket are sold simultaneously.Before You Purchase: The product is made by XLA high-presion printing without polish and painting, it is normal to have a few burr and defect. If you are a perfectionist, please beware of purchasing. Please feel free to contact us if you have any questions.Specifications:.Material: Plastic + Electronic Components.Product Dimensions: 6.4 x 6 x 5.5cm.Product Weight: 200g.Package Dimensions: 15 x 15 x 7cm.Package Weight: 280g.Packing: Graphic Carton Package Content:1 Set V8 Engine Model Kit

USD 99.99

ENJOMOR V8 GS-V8 78CC DOHC Four-Stroke V-Shaped Eight-Cylinder Water-cooled Electric Gasoline Internal Combustion Engine Model - V8 Engine Model That Works

ENJOMOR V8 GS-V8 78CC DOHC Four-Stroke V-Shaped Eight-Cylinder Water-cooled Electric Gasoline Internal Combustion Engine Model - V8 Engine Model That Works

ENJOMOR V8 GS-V8 78CC DOHC Four-Stroke V-Shaped Eight-Cylinder Water-cooled Electric Gasoline Internal Combustion Engine Model - V8 Engine Model That Works - PresaleEARLY BIRD PRICE - ENJOMOR V8-G52 ENGINE FOR PRE-SLAE NOW! Best Offer Right Now!1. Early Bird Price๏ผš$2499.99, Save $400!2. 20% Off Discount for ENJOMOR V8

USD 2899.99

What Engine DIY coupons are available today?

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172
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12
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Note: Our community tests every Engine DIY promo code and shares results in real-time. Check success rates and shopping tips in the activity feed to find what works best for your purchase.
Engine DIY logo

10% off

4 uses
high

worked 7 months ago

Save 10% off with code
Engine DIY logo

15% off

1 uses
high

worked 7 months ago

Take 15% off with coupon code
Engine DIY logo

10% off

7 uses
high

worked 7 months ago

Save 10% off with discount code
Engine DIY logo

30% off

2 uses
high

worked 7 months ago

Take 30% off with discount code

More Engine DIY Products

CISON FG-VT9 9cc V-Twin V2 Engine 4-Stroke Dual Black Cylinder 4-Stroke Air-cooled Motorcycle Gasoline Engine

CISON FG-VT9 9cc V-Twin V2 Engine 4-Stroke Dual Black Cylinder 4-Stroke Air-cooled Motorcycle Gasoline Engine

CISON FG-VT9 9cc V2 Engine V-Twin Dual Black Cylinder 4-Stroke Air-Cooled Gasoline Engine Motorcycle RC Engine Model - Harley Davidson Look Shippment Updates: 1. The silver one is in stock now and 20Pcs left, order now, ship now. 2. The black one is out of stock now and will be released later. Any question or suggestion, please feel free to contact us via email service@enginediy.com PDF Instructions Here: CISON V2 Engine Instructions Find More V2 Engine & Parts, click HERE! Find CISON V2 Original Accessories, click HERE! Find CISON V2 with Upgrade Kick Starter Kit, click HERE! CISON Original accessories -> CLICK HERE Warm Tips: The Cylinder is in black, main images is the real engine in silver for reference. The item of Cylinder you will receive is in black. Product Details: .Material: Metal.Brand: CISON.Model: FG-9VT.Item: V-type dual cylinder four-stroke gasoline engine.Form: finished product (assembled).Cylinder: V-type twin-cylinder;.Stroke: 4 strokes.Displacement: 9(4.5*2)cc.Bore: 16.67mm.Stroke: 21mm; Angle: 45ยฐ.Speed: 2000-8000rpm (Idle Speed Minimum: 1350rpm).Power: 0.8ps.Starting power: 2S-3S lithium battery..Cooling method: air cooling.Starting method: electric drill start.Fuel: gasoline (mixed lubrication 25:1)..Product Weight: 1500g.Package Dimensions: 20 x 20 x 25cm.Package Weight: 2000g Features: Highly Impressive Simulation: The highly simulated classic look and elegant silver appearance recreates how a real motorcycle engine looks.ย  Upgrade based on the original design to improve performance and reliability represents the most significant feature of motorcycles. Reliable Structure: Designed with OHV (overhead valve) bottom camshaft top rod air distribution structure, two cylinder cylinders are at a 45ยฐ angle, each cylinder has two valves,.The rocker arm and the connecting rod cooperate more smoothly, and the independent intake and exhaust design to ensure more accurate switch. Fine Processing: The body is manufactured with aluminum CNC precision processing, and the two copper exhaust elbows are more distinctive. The surface of the cylinder block is anodized and the rocker cover is chrome-plated. The engine will remain bright and clean for a long time, which makes a visually pleasing artwork Stable Performance: The crankshaft runs smoothly with large-area heat sink featuring ideal air-cooling effect, ensuring prolonged yet stable performance. The sensitive single carburetor throttle responseย  and the normal speed range of 2000-8000rpm are our highlights Wide Application: Whether it is used as a static model collection or started and applied to an RC model car, it is not inferior at all. The model reserves many upgradeable parts, giving players a lot of room for hands-on modification. At the same time, it is also an excellent personalized gift for model engine lovers Note: The engine comes with a spark plug and CDI igniter, does not include the fixed storage base of the engine and the electric starting device, please contact us if you have any requirements. Please operate the engine according to the instructions in the manual to avoid damage to the engine due to improper operation. Age Recommendation: 14 years old and up Package List: 1 x V2 Engine 1 x Electric drill starter 2 x Spark plug 1 x CDI igniter 2 x Copper exhaust pipe 1 x Instruction

USD 599.99

Mini Precision Electric Screwdriver DIY Tools Set with LED Light for Models & Electronics (Frosted)

Mini Precision Electric Screwdriver DIY Tools Set with LED Light for Models & Electronics (Frosted)

Mini Precision Electric Screwdriver DIY Tools Set with LED Light for Models & Electronics (Frosted) Features: .The mini precise electric screwdriver set is convenient to use, intelligent, and labor-saving, with an aluminum alloy body and excellent surface treatment for slip resistance and a comfortable hand feel..Designed with the handheld integrated operation mode, positive and negative rotation, magnetic chuck design to automatically adsorb the head, convenient Type-C charging port, and three LED lights which are evenly distributed in the front of the screwdriver..Equipped with magnetizer and magnetic eraser for easy reducing and increasing of the magnetic force of head and multiple ways to increase the length for different working environments adaptation..Compact, Convenient & Versatile: The screwdriver provides a set of installation tools for DIY model users to meet the basic requirements of building models. With it, toy model disassembly, parts assembly, electronic product maintenance, home installation, and more are just breezes! Specifications: .Material: Metal.Dimensions: ฯ†15.8*181mm.Torque Range: electric 0.35-0.4n.m/manual 3N.m.No Load Speed: 280-300rpm.Power Supply Type: Rechargeable Lithium-ion Technology.Operating Voltage: 3.7V.Battery Power: 260mAh.Charging Time: 40 minutes.Positive & Negative Rotation: Yes.Maximum Screw Diameter: 6.35mm.Product Weight: 480g.Package Dimensions: 25 x 8 x 5cm.Package Weight: 550g.Paking: Graphic Carton.Age: 14+

USD 64.99

Oil Injector Lubrication Oil Tank for Steam Engine Model

Oil Injector Lubrication Oil Tank for Steam Engine Model

Oil Injector Lubrication Oil Tank for Steam Engine Model Features: .Length 43mm, width 33MM, diameter 14MM.Screw connector is 1/4" X 40 TPI.This is a oil injector for steam engine model Specifications: .Color: As Shown.Material: Brass.Product Weight: 100g.Package Dimensions: 10 x 10 x 6cm.Package Weight: 150g.Packing: Box Package Content: .1 x Oil Injector

USD 19.99

Water cooling Starting Accessories Set for CISON Small-block V8 Engine

Water cooling Starting Accessories Set for CISON Small-block V8 Engine

Water cooling Starting Accessories Set for CISON Small-block V8 Engine Buy CISON V8 and get it for free Distributor*1 Ignition module*1 Get a complete starter water cooling kit when you purchase the kit below

USD 169.99

Engine DIY logo

10% off

19 uses
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worked 23 days ago

10% Off Storewide at Engine DIY
Engine DIY logo

10% off

21 uses
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worked 23 days ago

10% Off Storewide at Engine DIY
Engine DIY logo

10% off

19 uses
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worked 22 days ago

10% Off Storewide at Engine DIY
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10% off

15 uses
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worked about 2 months ago

10% Off Storewide at Engine DIY

Sustainability Score

42%
While EngineDIY offers some eco-friendly product options, their overall sustainability practices lack transparency and comprehensive reporting. Their packaging and shipping practices show room for improvement, and they provide limited information about their supply chain ethics. The company has made some initial steps toward environmental initiatives but lacks clear targets and measurements. Their recycling program for used parts is commendable, though their overall environmental impact tracking needs significant development.

About Engine DIY

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FAQs

The biggest sales typically occur during Black Friday/Cyber Monday, Memorial Day weekend, and their Anniversary Sale in July. They also run flash sales throughout the year.

Yes, they offer a 10% discount for verified students and military personnel (active duty and veterans) after verification through ID.me.

Winter parts are best purchased in late summer/early fall for the best deals. Summer performance parts typically go on sale during winter months. End-of-season clearances offer the deepest discounts.

Yes, EngineDIY offers price matching against major authorized retailers for identical items within 14 days of purchase.

In the past month, Engine DIY has launched 3 new promo coupons for shopper discounts. This indicates that Engine DIY does not provide regular opportunities for customers to save money on their purchases.

On average, Engine DIY provides 2 discount coupons each month. Based on historical data, the average time between Engine DIY coupon releases every 15 days. However, this rate depends on various factors such as seasonal promotions (Black Friday, Cyber Monday, etc.), product launches, or other marketing initiatives. To stay informed about upcoming discounts and promotions, we recommend checking Engine DIY website regularly, subscribing to email newsletters, and following them on social media.

Engine DIY is offering 12 working store-wide codes, however they are also offering 160 additional discount codes with a best discount of 15% off

terra.coupons is the #1 provider of discount codes for your favorite retailers, such as Engine DIY. As a crowd-sourced platform for coupon codes, we accurate codes for over 10,000 stores. Save time and avoid expired codes by checking terra.coupons for the latest Engine DIY discount codes.

Curated by

Aleksa P.

Aleksa P.

Deal Curator

Last updated September 2025

Aleksa is a deal finder from the tech-savvy city of Austin, Texas. A keen coder by day and a discount guru by night, Aleksa checks back regularly to update you with new deals.

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