Sinister Diesel subject lines
143 subject lines averaging 34 characters.
| Picture | Sent (Eastern) | Subject | Characters | Preview text | |
|---|---|---|---|---|---|
| Nov 1, 2026 11:45 AM | Halloween's Over. Your Savings Aren't. | 38 | The clock is ticking! Last chance to save up to 35% before tonight's deadline. | Nov 1, 2026 11:45 AM · 38 characters. The clock is ticking! Last chance to save up to 35% before tonight's deadline. | |
| Nov 1, 2026 1:45 AM | The Candy's Gone. The Deals Aren't. 🍬 | 38 | One last day to save 12–35% on Sinister Diesel parts. Ends tonight! | Nov 1, 2026 1:45 AM · 38 characters. One last day to save 12–35% on Sinister Diesel parts. Ends tonight! | |
| Oct 31, 2026 12:50 AM | Still on the fence? Here's 10% off | 34 | 💰Use this toward the upgrade you were considering. | Oct 31, 2026 12:50 AM · 34 characters. 💰Use this toward the upgrade you were considering. | |
| Oct 30, 2026 9:01 PM | Diesel Owners Picked These for a Reason | 39 | Our best-selling upgrades, trusted by thousands of diesel owners. | Oct 30, 2026 9:01 PM · 39 characters. Our best-selling upgrades, trusted by thousands of diesel owners. | |
| Oct 30, 2026 12:49 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Oct 30, 2026 12:49 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Oct 29, 2026 8:45 PM | Your Factory Parts Have a Weakness. We've Got Deals. | 52 | Upgrade your charge pipes, cold air intake & more. Use SPOOKY2026 before Nov 1! | Oct 29, 2026 8:45 PM · 52 characters. Upgrade your charge pipes, cold air intake & more. Use SPOOKY2026 before Nov 1! | |
| Oct 29, 2026 12:48 AM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Oct 29, 2026 12:48 AM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Oct 28, 2026 9:02 PM | 🎃 Halloween Sale Is LIVE! 12–35% OFF | 38 | Your next diesel upgrade just got cheaper. Use code SPOOKY26. Ends Nov 1. | Oct 28, 2026 9:02 PM · 38 characters. Your next diesel upgrade just got cheaper. Use code SPOOKY26. Ends Nov 1. | |
| Oct 26, 2026 8:45 PM | 🛑 STOP SuffocatingYour Diesel | 30 | Sinister Diesel Cold Air Intakes for your Powerstroke, Cummins and Duramax Diesel | Oct 26, 2026 8:45 PM · 30 characters. Sinister Diesel Cold Air Intakes for your Powerstroke, Cummins and Duramax Diesel | |
| Oct 25, 2026 8:07 PM | Up to 50% OFF. What's the Catch? | 32 | Open boxes, minor cosmetic flaws, and major savings on fully functional Sinister Diesel… | Oct 25, 2026 8:07 PM · 32 characters. Open boxes, minor cosmetic flaws, and major savings on fully functional Sinister Diesel… | |
| Oct 21, 2026 8:12 PM | Stop Fixing the Same Problems Twice | 35 | Don't just replace failed parts. Fix the factory weak points with complete Sinister Diesel… | Oct 21, 2026 8:12 PM · 35 characters. Don't just replace failed parts. Fix the factory weak points with complete Sinister Diesel… | |
| Oct 20, 2026 2:38 PM | Your 6.7 Has a Fuel Leak Waiting to Happen | 42 | That factory plastic fuel filter housing can crack and leak. Replace the weak point before… | Oct 20, 2026 2:38 PM · 42 characters. That factory plastic fuel filter housing can crack and leak. Replace the weak point before… | |
| Oct 17, 2026 9:31 AM | Powerstroke Owners, This One's for You | 38 | 7.3, 6.0, 6.4 or 6.7? Find the upgrades built specifically for your truck. | Oct 17, 2026 9:31 AM · 38 characters. 7.3, 6.0, 6.4 or 6.7? Find the upgrades built specifically for your truck. | |
| Oct 17, 2026 12:17 AM | The Parts Diesel Owners Upgrade First | 37 | Proven engine components and solution kits built to fix factory weak points. | Oct 17, 2026 12:17 AM · 37 characters. Proven engine components and solution kits built to fix factory weak points. | |
| Oct 15, 2026 12:16 AM | Why Most Stock Diesel Parts Fail Early | 38 | Coolant contamination, restricted flow, and the factory shortcuts nobody mentions. | Oct 15, 2026 12:16 AM · 38 characters. Coolant contamination, restricted flow, and the factory shortcuts nobody mentions. | |
| Oct 14, 2026 12:15 AM | Welcome to Sinister Diesel — Your 10% Code Is Inside | 54 | Log in, use code Sinister10, and save 10% on Sinister Diesel–branded parts. | Oct 14, 2026 12:15 AM · 54 characters. Log in, use code Sinister10, and save 10% on Sinister Diesel–branded parts. | |
| Oct 7, 2026 6:17 PM | FINAL HOURS: Prime Time Ends Tonight | 36 | Last call for 12–35% off. Use code DPT2026 before the clock runs out. | Oct 7, 2026 6:17 PM · 36 characters. Last call for 12–35% off. Use code DPT2026 before the clock runs out. | |
| Oct 6, 2026 6:00 PM | Your Diesel Prime Time Picks Are Here | 37 | Powerstroke, Cummins or Duramax—save 12–35% on the upgrades your truck needs. | Oct 6, 2026 6:00 PM · 37 characters. Powerstroke, Cummins or Duramax—save 12–35% on the upgrades your truck needs. | |
| Oct 6, 2026 1:45 AM | Diesel Prime Time Sale STARTS TODAY! | 36 | 2 Days only! When the deals are gone they are gone | Oct 6, 2026 1:45 AM · 36 characters. 2 Days only! When the deals are gone they are gone | |
| Oct 3, 2026 9:07 AM | Stop Fixing the Same Problems Twice | 35 | Complete kits built to address your diesel’s weak points—not just patch the symptoms. | Oct 3, 2026 9:07 AM · 35 characters. Complete kits built to address your diesel’s weak points—not just patch the symptoms. | |
| Oct 1, 2026 1:45 AM | Cummins & Duramax Owners — This One’s for You | 47 | Shop our most popular upgrades for reliability, filtration, airflow and more. | Oct 1, 2026 1:45 AM · 47 characters. Shop our most popular upgrades for reliability, filtration, airflow and more. | |
| Sep 28, 2026 3:01 AM | Okay… You Get One More Day. | 28 | We extended the Fall Ready Sale for today ONLY. After this, it’s really over. | Sep 28, 2026 3:01 AM · 28 characters. We extended the Fall Ready Sale for today ONLY. After this, it’s really over. | |
| Sep 27, 2026 5:30 PM | FINAL HOURS: Sale Ends Tonight ⏰ | 33 | Last call. Get your order in before Fall Ready savings disappear tonight. | Sep 27, 2026 5:30 PM · 33 characters. Last call. Get your order in before Fall Ready savings disappear tonight. | |
| Sep 27, 2026 9:00 AM | This Is It. Fall Ready Sale Ends Today. | 39 | Last day to save on the upgrades you’ve been putting off. | Sep 27, 2026 9:00 AM · 39 characters. Last day to save on the upgrades you’ve been putting off. | |
| Sep 23, 2026 6:01 PM | Stop Chasing Symptoms. Fix the System. | 38 | The right combination of upgrades can solve the problem instead of masking it. | Sep 23, 2026 6:01 PM · 38 characters. The right combination of upgrades can solve the problem instead of masking it. | |
| Sep 22, 2026 10:05 AM | Fall Ready Sale Starts NOW 🍂 | 29 | Save on the diesel upgrades you’ve been waiting for—but only for a limited time. | Sep 22, 2026 10:05 AM · 29 characters. Save on the diesel upgrades you’ve been waiting for—but only for a limited time. | |
| Sep 17, 2026 10:03 AM | The 6.7 Power Stroke Upgrades That Matter | 41 | Fix common weak points and upgrade your 6.7 with our most popular parts. | Sep 17, 2026 10:03 AM · 41 characters. Fix common weak points and upgrade your 6.7 with our most popular parts. | |
| Sep 8, 2026 1:45 AM | You Asked. We Gave It 24 More Hours. | 36 | One final day of Labor Day savings. No second extension. | Sep 8, 2026 1:45 AM · 36 characters. One final day of Labor Day savings. No second extension. | |
| Sep 7, 2026 6:03 PM | FINAL HOURS: Sale Ends Tonight ⏰ | 33 | Last call. Get your order in before Labor Day savings disappear tonight. | Sep 7, 2026 6:03 PM · 33 characters. Last call. Get your order in before Labor Day savings disappear tonight. | |
| Sep 6, 2026 6:03 PM | Tomorrow, These Deals Are Gone. | 31 | Labor Day savings end tomorrow. Don’t wait until the final hours. | Sep 6, 2026 6:03 PM · 31 characters. Labor Day savings end tomorrow. Don’t wait until the final hours. | |
| Sep 3, 2026 9:45 AM | 👉The Labor Day Sale Starts NOW! | 32 | Save big on the diesel upgrades you’ve been waiting for. | Sep 3, 2026 9:45 AM · 32 characters. Save big on the diesel upgrades you’ve been waiting for. | |
| Aug 27, 2026 10:03 AM | Your Next Upgrade Is Worth Double 🔥 | 36 | Earn 2X Rewards Points on every purchase this weekend only. | Aug 27, 2026 10:03 AM · 36 characters. Earn 2X Rewards Points on every purchase this weekend only. | |
| Aug 26, 2026 2:58 PM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Aug 26, 2026 2:58 PM · 34 characters. Your upgrade is still available — take a closer look. | |
| Aug 25, 2026 10:03 AM | 👉 Once They're Gone, They're Gone. | 35 | Save big on clearance, open-box, and scratch & dent parts before they're gone. | Aug 25, 2026 10:03 AM · 35 characters. Save big on clearance, open-box, and scratch & dent parts before they're gone. | |
| Aug 23, 2026 6:02 PM | This Is It. Sale Ends Tonight. | 30 | Final hours to save on the diesel upgrades you've been waiting for. | Aug 23, 2026 6:02 PM · 30 characters. Final hours to save on the diesel upgrades you've been waiting for. | |
| Aug 20, 2026 6:39 AM | Still on the fence? Here's 10% off | 34 | 💰Use this toward the upgrade you were considering. | Aug 20, 2026 6:39 AM · 34 characters. 💰Use this toward the upgrade you were considering. | |
| Aug 19, 2026 6:36 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Aug 19, 2026 6:36 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Aug 18, 2026 1:45 AM | Your Charge Pipe Won't Warn You Before It Fails | 47 | Factory weak points don't care where you are when they let go. Upgrade before you're stuck… | Aug 18, 2026 1:45 AM · 47 characters. Factory weak points don't care where you are when they let go. Upgrade before you're stuck… | |
| Aug 6, 2026 10:13 AM | You Might Be Suffocating Your Diesel | 36 | More airflow. Lower intake temps. Better performance starts here. | Aug 6, 2026 10:13 AM · 36 characters. More airflow. Lower intake temps. Better performance starts here. | |
| Aug 5, 2026 10:53 AM | Still on the fence? Here's 10% off | 34 | 💰Use this toward the upgrade you were considering. | Aug 5, 2026 10:53 AM · 34 characters. 💰Use this toward the upgrade you were considering. | |
| Aug 4, 2026 10:53 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Aug 4, 2026 10:53 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Aug 3, 2026 10:50 AM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Aug 3, 2026 10:50 AM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Aug 2, 2026 6:01 PM | Final Hours. Don't Miss Out. | 28 | Your Mid Summer Sale ends tonight. Save 12–35% before midnight. | Aug 2, 2026 6:01 PM · 28 characters. Your Mid Summer Sale ends tonight. Save 12–35% before midnight. | |
| Aug 1, 2026 10:02 AM | Fix It Before It Fails | 22 | Upgrade factory weak points now and save during our Mid Summer Sale. | Aug 1, 2026 10:02 AM · 22 characters. Upgrade factory weak points now and save during our Mid Summer Sale. | |
| Jul 28, 2026 10:02 AM | The Mid Summer Sale Starts Now ☀️ | 33 | Save 12–35% on the diesel upgrades you've been waiting for. | Jul 28, 2026 10:02 AM · 33 characters. Save 12–35% on the diesel upgrades you've been waiting for. | |
| Jul 26, 2026 3:27 AM | Still on the fence? Here's 10% off | 34 | 💰Use this toward the upgrade you were considering. | Jul 26, 2026 3:27 AM · 34 characters. 💰Use this toward the upgrade you were considering. | |
| Jul 25, 2026 3:26 AM | 🤔 Still considering your upgrade? | 34 | Your upgrade is still available — take a closer look. | Jul 25, 2026 3:26 AM · 34 characters. Your upgrade is still available — take a closer look. | |
| Jul 24, 2026 3:25 AM | 👀 You were checking this out earlier | 37 | Take another look — built to solve real problems diesel owners deal with every day. | Jul 24, 2026 3:25 AM · 37 characters. Take another look — built to solve real problems diesel owners deal with every day. | |
| Jul 23, 2026 10:16 AM | 2X Rewards Are Live 🔥 | 22 | Every dollar spent earns double the points—but only for a limited time. | Jul 23, 2026 10:16 AM · 22 characters. Every dollar spent earns double the points—but only for a limited time. | |
| Jul 19, 2026 6:00 PM | When Did You Last Change Your Filters? | 38 | Dirty filters can rob power, hurt fuel economy, and shorten the life of expensive… | Jul 19, 2026 6:00 PM · 38 characters. Dirty filters can rob power, hurt fuel economy, and shorten the life of expensive… |
Based on 143 emails received from Mar 16 to Nov 1, 2026. Times in US Eastern. How we collect